JDK8/Java8源码在线阅读
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* accompanied this code).
*
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*
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package javax.swing;
import java.awt.*;
import java.awt.event.*;
import java.beans.Transient;
import java.util.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
import javax.accessibility.*;
import sun.swing.SwingUtilities2;
import java.io.Serializable;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import java.io.IOException;
/**
* A component that lets the user switch between a group of components by
* clicking on a tab with a given title and/or icon.
* For examples and information on using tabbed panes see
* <a href="https://docs.oracle.com/javase/tutorial/uiswing/components/tabbedpane.html">How to Use Tabbed Panes</a>,
* a section in <em>The Java Tutorial</em>.
* <p>
* Tabs/components are added to a <code>TabbedPane</code> object by using the
* <code>addTab</code> and <code>insertTab</code> methods.
* A tab is represented by an index corresponding
* to the position it was added in, where the first tab has an index equal to 0
* and the last tab has an index equal to the tab count minus 1.
* <p>
* The <code>TabbedPane</code> uses a <code>SingleSelectionModel</code>
* to represent the set
* of tab indices and the currently selected index. If the tab count
* is greater than 0, then there will always be a selected index, which
* by default will be initialized to the first tab. If the tab count is
* 0, then the selected index will be -1.
* <p>
* The tab title can be rendered by a <code>Component</code>.
* For example, the following produce similar results:
* <pre>
* // In this case the look and feel renders the title for the tab.
* tabbedPane.addTab("Tab", myComponent);
* // In this case the custom component is responsible for rendering the
* // title of the tab.
* tabbedPane.addTab(null, myComponent);
* tabbedPane.setTabComponentAt(0, new JLabel("Tab"));
* </pre>
* The latter is typically used when you want a more complex user interaction
* that requires custom components on the tab. For example, you could
* provide a custom component that animates or one that has widgets for
* closing the tab.
* <p>
* If you specify a component for a tab, the <code>JTabbedPane</code>
* will not render any text or icon you have specified for the tab.
* <p>
* <strong>Note:</strong>
* Do not use <code>setVisible</code> directly on a tab component to make it visible,
* use <code>setSelectedComponent</code> or <code>setSelectedIndex</code> methods instead.
* <p>
* <strong>Warning:</strong> Swing is not thread safe. For more
* information see <a
* href="package-summary.html#threading">Swing's Threading
* Policy</a>.
* <p>
* <strong>Warning:</strong>
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is
* appropriate for short term storage or RMI between applications running
* the same version of Swing. As of 1.4, support for long term storage
* of all JavaBeans™
* has been added to the <code>java.beans</code> package.
* Please see {@link java.beans.XMLEncoder}.
*
* @beaninfo
* attribute: isContainer true
* description: A component which provides a tab folder metaphor for
* displaying one component from a set of components.
*
* @author Dave Moore
* @author Philip Milne
* @author Amy Fowler
*
* @see SingleSelectionModel
*/
public class JTabbedPane extends JComponent
implements Serializable, Accessible, SwingConstants {
/**
* The tab layout policy for wrapping tabs in multiple runs when all
* tabs will not fit within a single run.
*/
public static final int WRAP_TAB_LAYOUT = 0;
/**
* Tab layout policy for providing a subset of available tabs when all
* the tabs will not fit within a single run. If all the tabs do
* not fit within a single run the look and feel will provide a way
* to navigate to hidden tabs.
*/
public static final int SCROLL_TAB_LAYOUT = 1;
/**
* @see #getUIClassID
* @see #readObject
*/
private static final String uiClassID = "TabbedPaneUI";
/**
* Where the tabs are placed.
* @see #setTabPlacement
*/
protected int tabPlacement = TOP;
private int tabLayoutPolicy;
/** The default selection model */
protected SingleSelectionModel model;
private boolean haveRegistered;
/**
* The <code>changeListener</code> is the listener we add to the
* model.
*/
protected ChangeListener changeListener = null;
private final java.util.List<Page> pages;
/* The component that is currently visible */
private Component visComp = null;
/**
* Only one <code>ChangeEvent</code> is needed per <code>TabPane</code>
* instance since the
* event's only (read-only) state is the source property. The source
* of events generated here is always "this".
*/
protected transient ChangeEvent changeEvent = null;
/**
* Creates an empty <code>TabbedPane</code> with a default
* tab placement of <code>JTabbedPane.TOP</code>.
* @see #addTab
*/
public JTabbedPane() {
this(TOP, WRAP_TAB_LAYOUT);
}
/**
* Creates an empty <code>TabbedPane</code> with the specified tab placement
* of either: <code>JTabbedPane.TOP</code>, <code>JTabbedPane.BOTTOM</code>,
* <code>JTabbedPane.LEFT</code>, or <code>JTabbedPane.RIGHT</code>.
*
* @param tabPlacement the placement for the tabs relative to the content
* @see #addTab
*/
public JTabbedPane(int tabPlacement) {
this(tabPlacement, WRAP_TAB_LAYOUT);
}
/**
* Creates an empty <code>TabbedPane</code> with the specified tab placement
* and tab layout policy. Tab placement may be either:
* <code>JTabbedPane.TOP</code>, <code>JTabbedPane.BOTTOM</code>,
* <code>JTabbedPane.LEFT</code>, or <code>JTabbedPane.RIGHT</code>.
* Tab layout policy may be either: <code>JTabbedPane.WRAP_TAB_LAYOUT</code>
* or <code>JTabbedPane.SCROLL_TAB_LAYOUT</code>.
*
* @param tabPlacement the placement for the tabs relative to the content
* @param tabLayoutPolicy the policy for laying out tabs when all tabs will not fit on one run
* @exception IllegalArgumentException if tab placement or tab layout policy are not
* one of the above supported values
* @see #addTab
* @since 1.4
*/
public JTabbedPane(int tabPlacement, int tabLayoutPolicy) {
setTabPlacement(tabPlacement);
setTabLayoutPolicy(tabLayoutPolicy);
pages = new ArrayList<Page>(1);
setModel(new DefaultSingleSelectionModel());
updateUI();
}
/**
* Returns the UI object which implements the L&F for this component.
*
* @return a <code>TabbedPaneUI</code> object
* @see #setUI
*/
public TabbedPaneUI getUI() {
return (TabbedPaneUI)ui;
}
/**
* Sets the UI object which implements the L&F for this component.
*
* @param ui the new UI object
* @see UIDefaults#getUI
* @beaninfo
* bound: true
* hidden: true
* attribute: visualUpdate true
* description: The UI object that implements the tabbedpane's LookAndFeel
*/
public void setUI(TabbedPaneUI ui) {
super.setUI(ui);
// disabled icons are generated by LF so they should be unset here
for (int i = 0; i < getTabCount(); i++) {
Icon icon = pages.get(i).disabledIcon;
if (icon instanceof UIResource) {
setDisabledIconAt(i, null);
}
}
}
/**
* Resets the UI property to a value from the current look and feel.
*
* @see JComponent#updateUI
*/
public void updateUI() {
setUI((TabbedPaneUI)UIManager.getUI(this));
}
/**
* Returns the name of the UI class that implements the
* L&F for this component.
*
* @return the string "TabbedPaneUI"
* @see JComponent#getUIClassID
* @see UIDefaults#getUI
*/
public String getUIClassID() {
return uiClassID;
}
/**
* We pass <code>ModelChanged</code> events along to the listeners with
* the tabbedpane (instead of the model itself) as the event source.
*/
protected class ModelListener implements ChangeListener, Serializable {
public void stateChanged(ChangeEvent e) {
fireStateChanged();
}
}
/**
* Subclasses that want to handle <code>ChangeEvents</code> differently
* can override this to return a subclass of <code>ModelListener</code> or
* another <code>ChangeListener</code> implementation.
*
* @see #fireStateChanged
*/
protected ChangeListener createChangeListener() {
return new ModelListener();
}
/**
* Adds a <code>ChangeListener</code> to this tabbedpane.
*
* @param l the <code>ChangeListener</code> to add
* @see #fireStateChanged
* @see #removeChangeListener
*/
public void addChangeListener(ChangeListener l) {
listenerList.add(ChangeListener.class, l);
}
/**
* Removes a <code>ChangeListener</code> from this tabbedpane.
*
* @param l the <code>ChangeListener</code> to remove
* @see #fireStateChanged
* @see #addChangeListener
*/
public void removeChangeListener(ChangeListener l) {
listenerList.remove(ChangeListener.class, l);
}
/**
* Returns an array of all the <code>ChangeListener</code>s added
* to this <code>JTabbedPane</code> with <code>addChangeListener</code>.
*
* @return all of the <code>ChangeListener</code>s added or an empty
* array if no listeners have been added
* @since 1.4
*/
public ChangeListener[] getChangeListeners() {
return listenerList.getListeners(ChangeListener.class);
}
/**
* Sends a {@code ChangeEvent}, with this {@code JTabbedPane} as the source,
* to each registered listener. This method is called each time there is
* a change to either the selected index or the selected tab in the
* {@code JTabbedPane}. Usually, the selected index and selected tab change
* together. However, there are some cases, such as tab addition, where the
* selected index changes and the same tab remains selected. There are other
* cases, such as deleting the selected tab, where the index remains the
* same, but a new tab moves to that index. Events are fired for all of
* these cases.
*
* @see #addChangeListener
* @see EventListenerList
*/
protected void fireStateChanged() {
/* --- Begin code to deal with visibility --- */
/* This code deals with changing the visibility of components to
* hide and show the contents for the selected tab. It duplicates
* logic already present in BasicTabbedPaneUI, logic that is
* processed during the layout pass. This code exists to allow
* developers to do things that are quite difficult to accomplish
* with the previous model of waiting for the layout pass to process
* visibility changes; such as requesting focus on the new visible
* component.
*
* For the average code, using the typical JTabbedPane methods,
* all visibility changes will now be processed here. However,
* the code in BasicTabbedPaneUI still exists, for the purposes
* of backward compatibility. Therefore, when making changes to
* this code, ensure that the BasicTabbedPaneUI code is kept in
* synch.
*/
int selIndex = getSelectedIndex();
/* if the selection is now nothing */
if (selIndex < 0) {
/* if there was a previous visible component */
if (visComp != null && visComp.isVisible()) {
/* make it invisible */
visComp.setVisible(false);
}
/* now there's no visible component */
visComp = null;
/* else - the selection is now something */
} else {
/* Fetch the component for the new selection */
Component newComp = getComponentAt(selIndex);
/* if the new component is non-null and different */
if (newComp != null && newComp != visComp) {
boolean shouldChangeFocus = false;
/* Note: the following (clearing of the old visible component)
* is inside this if-statement for good reason: Tabbed pane
* should continue to show the previously visible component
* if there is no component for the chosen tab.
*/
/* if there was a previous visible component */
if (visComp != null) {
shouldChangeFocus =
(SwingUtilities.findFocusOwner(visComp) != null);
/* if it's still visible */
if (visComp.isVisible()) {
/* make it invisible */
visComp.setVisible(false);
}
}
if (!newComp.isVisible()) {
newComp.setVisible(true);
}
if (shouldChangeFocus) {
SwingUtilities2.tabbedPaneChangeFocusTo(newComp);
}
visComp = newComp;
} /* else - the visible component shouldn't changed */
}
/* --- End code to deal with visibility --- */
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length-2; i>=0; i-=2) {
if (listeners[i]==ChangeListener.class) {
// Lazily create the event:
if (changeEvent == null)
changeEvent = new ChangeEvent(this);
((ChangeListener)listeners[i+1]).stateChanged(changeEvent);
}
}
}
/**
* Returns the model associated with this tabbedpane.
*
* @see #setModel
*/
public SingleSelectionModel getModel() {
return model;
}
/**
* Sets the model to be used with this tabbedpane.
*
* @param model the model to be used
* @see #getModel
* @beaninfo
* bound: true
* description: The tabbedpane's SingleSelectionModel.
*/
public void setModel(SingleSelectionModel model) {
SingleSelectionModel oldModel = getModel();
if (oldModel != null) {
oldModel.removeChangeListener(changeListener);
changeListener = null;
}
this.model = model;
if (model != null) {
changeListener = createChangeListener();
model.addChangeListener(changeListener);
}
firePropertyChange("model", oldModel, model);
repaint();
}
/**
* Returns the placement of the tabs for this tabbedpane.
* @see #setTabPlacement
*/
public int getTabPlacement() {
return tabPlacement;
}
/**
* Sets the tab placement for this tabbedpane.
* Possible values are:<ul>
* <li><code>JTabbedPane.TOP</code>
* <li><code>JTabbedPane.BOTTOM</code>
* <li><code>JTabbedPane.LEFT</code>
* <li><code>JTabbedPane.RIGHT</code>
* </ul>
* The default value, if not set, is <code>SwingConstants.TOP</code>.
*
* @param tabPlacement the placement for the tabs relative to the content
* @exception IllegalArgumentException if tab placement value isn't one
* of the above valid values
*
* @beaninfo
* preferred: true
* bound: true
* attribute: visualUpdate true
* enum: TOP JTabbedPane.TOP
* LEFT JTabbedPane.LEFT
* BOTTOM JTabbedPane.BOTTOM
* RIGHT JTabbedPane.RIGHT
* description: The tabbedpane's tab placement.
*
*/
public void setTabPlacement(int tabPlacement) {
if (tabPlacement != TOP && tabPlacement != LEFT &&
tabPlacement != BOTTOM && tabPlacement != RIGHT) {
throw new IllegalArgumentException("illegal tab placement: must be TOP, BOTTOM, LEFT, or RIGHT");
}
if (this.tabPlacement != tabPlacement) {
int oldValue = this.tabPlacement;
this.tabPlacement = tabPlacement;
firePropertyChange("tabPlacement", oldValue, tabPlacement);
revalidate();
repaint();
}
}
/**
* Returns the policy used by the tabbedpane to layout the tabs when all the
* tabs will not fit within a single run.
* @see #setTabLayoutPolicy
* @since 1.4
*/
public int getTabLayoutPolicy() {
return tabLayoutPolicy;
}
/**
* Sets the policy which the tabbedpane will use in laying out the tabs
* when all the tabs will not fit within a single run.
* Possible values are:
* <ul>
* <li><code>JTabbedPane.WRAP_TAB_LAYOUT</code>
* <li><code>JTabbedPane.SCROLL_TAB_LAYOUT</code>
* </ul>
*
* The default value, if not set by the UI, is <code>JTabbedPane.WRAP_TAB_LAYOUT</code>.
* <p>
* Some look and feels might only support a subset of the possible
* layout policies, in which case the value of this property may be
* ignored.
*
* @param tabLayoutPolicy the policy used to layout the tabs
* @exception IllegalArgumentException if layoutPolicy value isn't one
* of the above valid values
* @see #getTabLayoutPolicy
* @since 1.4
*
* @beaninfo
* preferred: true
* bound: true
* attribute: visualUpdate true
* enum: WRAP_TAB_LAYOUT JTabbedPane.WRAP_TAB_LAYOUT
* SCROLL_TAB_LAYOUT JTabbedPane.SCROLL_TAB_LAYOUT
* description: The tabbedpane's policy for laying out the tabs
*
*/
public void setTabLayoutPolicy(int tabLayoutPolicy) {
if (tabLayoutPolicy != WRAP_TAB_LAYOUT && tabLayoutPolicy != SCROLL_TAB_LAYOUT) {
throw new IllegalArgumentException("illegal tab layout policy: must be WRAP_TAB_LAYOUT or SCROLL_TAB_LAYOUT");
}
if (this.tabLayoutPolicy != tabLayoutPolicy) {
int oldValue = this.tabLayoutPolicy;
this.tabLayoutPolicy = tabLayoutPolicy;
firePropertyChange("tabLayoutPolicy", oldValue, tabLayoutPolicy);
revalidate();
repaint();
}
}
/**
* Returns the currently selected index for this tabbedpane.
* Returns -1 if there is no currently selected tab.
*
* @return the index of the selected tab
* @see #setSelectedIndex
*/
@Transient
public int getSelectedIndex() {
return model.getSelectedIndex();
}
/**
* Sets the selected index for this tabbedpane. The index must be
* a valid tab index or -1, which indicates that no tab should be selected
* (can also be used when there are no tabs in the tabbedpane). If a -1
* value is specified when the tabbedpane contains one or more tabs, then
* the results will be implementation defined.
*
* @param index the index to be selected
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < -1 || index >= tab count)}
*
* @see #getSelectedIndex
* @see SingleSelectionModel#setSelectedIndex
* @beaninfo
* preferred: true
* description: The tabbedpane's selected tab index.
*/
public void setSelectedIndex(int index) {
if (index != -1) {
checkIndex(index);
}
setSelectedIndexImpl(index, true);
}
private void setSelectedIndexImpl(int index, boolean doAccessibleChanges) {
int oldIndex = model.getSelectedIndex();
Page oldPage = null, newPage = null;
String oldName = null;
doAccessibleChanges = doAccessibleChanges && (oldIndex != index);
if (doAccessibleChanges) {
if (accessibleContext != null) {
oldName = accessibleContext.getAccessibleName();
}
if (oldIndex >= 0) {
oldPage = pages.get(oldIndex);
}
if (index >= 0) {
newPage = pages.get(index);
}
}
model.setSelectedIndex(index);
if (doAccessibleChanges) {
changeAccessibleSelection(oldPage, oldName, newPage);
}
}
private void changeAccessibleSelection(Page oldPage, String oldName, Page newPage) {
if (accessibleContext == null) {
return;
}
if (oldPage != null) {
oldPage.firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
AccessibleState.SELECTED, null);
}
if (newPage != null) {
newPage.firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
null, AccessibleState.SELECTED);
}
accessibleContext.firePropertyChange(
AccessibleContext.ACCESSIBLE_NAME_PROPERTY,
oldName,
accessibleContext.getAccessibleName());
}
/**
* Returns the currently selected component for this tabbedpane.
* Returns <code>null</code> if there is no currently selected tab.
*
* @return the component corresponding to the selected tab
* @see #setSelectedComponent
*/
@Transient
public Component getSelectedComponent() {
int index = getSelectedIndex();
if (index == -1) {
return null;
}
return getComponentAt(index);
}
/**
* Sets the selected component for this tabbedpane. This
* will automatically set the <code>selectedIndex</code> to the index
* corresponding to the specified component.
*
* @exception IllegalArgumentException if component not found in tabbed
* pane
* @see #getSelectedComponent
* @beaninfo
* preferred: true
* description: The tabbedpane's selected component.
*/
public void setSelectedComponent(Component c) {
int index = indexOfComponent(c);
if (index != -1) {
setSelectedIndex(index);
} else {
throw new IllegalArgumentException("component not found in tabbed pane");
}
}
/**
* Inserts a new tab for the given component, at the given index,
* represented by the given title and/or icon, either of which may
* be {@code null}.
*
* @param title the title to be displayed on the tab
* @param icon the icon to be displayed on the tab
* @param component the component to be displayed when this tab is clicked.
* @param tip the tooltip to be displayed for this tab
* @param index the position to insert this new tab
* ({@code > 0 and <= getTabCount()})
*
* @throws IndexOutOfBoundsException if the index is out of range
* ({@code < 0 or > getTabCount()})
*
* @see #addTab
* @see #removeTabAt
*/
public void insertTab(String title, Icon icon, Component component, String tip, int index) {
int newIndex = index;
// If component already exists, remove corresponding
// tab so that new tab gets added correctly
// Note: we are allowing component=null because of compatibility,
// but we really should throw an exception because much of the
// rest of the JTabbedPane implementation isn't designed to deal
// with null components for tabs.
int removeIndex = indexOfComponent(component);
if (component != null && removeIndex != -1) {
removeTabAt(removeIndex);
if (newIndex > removeIndex) {
newIndex--;
}
}
int selectedIndex = getSelectedIndex();
pages.add(
newIndex,
new Page(this, title != null? title : "", icon, null, component, tip));
if (component != null) {
addImpl(component, null, -1);
component.setVisible(false);
} else {
firePropertyChange("indexForNullComponent", -1, index);
}
if (pages.size() == 1) {
setSelectedIndex(0);
}
if (selectedIndex >= newIndex) {
setSelectedIndexImpl(selectedIndex + 1, false);
}
if (!haveRegistered && tip != null) {
ToolTipManager.sharedInstance().registerComponent(this);
haveRegistered = true;
}
if (accessibleContext != null) {
accessibleContext.firePropertyChange(
AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
null, component);
}
revalidate();
repaint();
}
/**
* Adds a <code>component</code> and <code>tip</code>
* represented by a <code>title</code> and/or <code>icon</code>,
* either of which can be <code>null</code>.
* Cover method for <code>insertTab</code>.
*
* @param title the title to be displayed in this tab
* @param icon the icon to be displayed in this tab
* @param component the component to be displayed when this tab is clicked
* @param tip the tooltip to be displayed for this tab
*
* @see #insertTab
* @see #removeTabAt
*/
public void addTab(String title, Icon icon, Component component, String tip) {
insertTab(title, icon, component, tip, pages.size());
}
/**
* Adds a <code>component</code> represented by a <code>title</code>
* and/or <code>icon</code>, either of which can be <code>null</code>.
* Cover method for <code>insertTab</code>.
*
* @param title the title to be displayed in this tab
* @param icon the icon to be displayed in this tab
* @param component the component to be displayed when this tab is clicked
*
* @see #insertTab
* @see #removeTabAt
*/
public void addTab(String title, Icon icon, Component component) {
insertTab(title, icon, component, null, pages.size());
}
/**
* Adds a <code>component</code> represented by a <code>title</code>
* and no icon.
* Cover method for <code>insertTab</code>.
*
* @param title the title to be displayed in this tab
* @param component the component to be displayed when this tab is clicked
*
* @see #insertTab
* @see #removeTabAt
*/
public void addTab(String title, Component component) {
insertTab(title, null, component, null, pages.size());
}
/**
* Adds a <code>component</code> with a tab title defaulting to
* the name of the component which is the result of calling
* <code>component.getName</code>.
* Cover method for <code>insertTab</code>.
*
* @param component the component to be displayed when this tab is clicked
* @return the component
*
* @see #insertTab
* @see #removeTabAt
*/
public Component add(Component component) {
if (!(component instanceof UIResource)) {
addTab(component.getName(), component);
} else {
super.add(component);
}
return component;
}
/**
* Adds a <code>component</code> with the specified tab title.
* Cover method for <code>insertTab</code>.
*
* @param title the title to be displayed in this tab
* @param component the component to be displayed when this tab is clicked
* @return the component
*
* @see #insertTab
* @see #removeTabAt
*/
public Component add(String title, Component component) {
if (!(component instanceof UIResource)) {
addTab(title, component);
} else {
super.add(title, component);
}
return component;
}
/**
* Adds a <code>component</code> at the specified tab index with a tab
* title defaulting to the name of the component.
* Cover method for <code>insertTab</code>.
*
* @param component the component to be displayed when this tab is clicked
* @param index the position to insert this new tab
* @return the component
*
* @see #insertTab
* @see #removeTabAt
*/
public Component add(Component component, int index) {
if (!(component instanceof UIResource)) {
// Container.add() interprets -1 as "append", so convert
// the index appropriately to be handled by the vector
insertTab(component.getName(), null, component, null,
index == -1? getTabCount() : index);
} else {
super.add(component, index);
}
return component;
}
/**
* Adds a <code>component</code> to the tabbed pane.
* If <code>constraints</code> is a <code>String</code> or an
* <code>Icon</code>, it will be used for the tab title,
* otherwise the component's name will be used as the tab title.
* Cover method for <code>insertTab</code>.
*
* @param component the component to be displayed when this tab is clicked
* @param constraints the object to be displayed in the tab
*
* @see #insertTab
* @see #removeTabAt
*/
public void add(Component component, Object constraints) {
if (!(component instanceof UIResource)) {
if (constraints instanceof String) {
addTab((String)constraints, component);
} else if (constraints instanceof Icon) {
addTab(null, (Icon)constraints, component);
} else {
add(component);
}
} else {
super.add(component, constraints);
}
}
/**
* Adds a <code>component</code> at the specified tab index.
* If <code>constraints</code> is a <code>String</code> or an
* <code>Icon</code>, it will be used for the tab title,
* otherwise the component's name will be used as the tab title.
* Cover method for <code>insertTab</code>.
*
* @param component the component to be displayed when this tab is clicked
* @param constraints the object to be displayed in the tab
* @param index the position to insert this new tab
*
* @see #insertTab
* @see #removeTabAt
*/
public void add(Component component, Object constraints, int index) {
if (!(component instanceof UIResource)) {
Icon icon = constraints instanceof Icon? (Icon)constraints : null;
String title = constraints instanceof String? (String)constraints : null;
// Container.add() interprets -1 as "append", so convert
// the index appropriately to be handled by the vector
insertTab(title, icon, component, null, index == -1? getTabCount() : index);
} else {
super.add(component, constraints, index);
}
}
/**
* Removes the tab at <code>index</code>.
* After the component associated with <code>index</code> is removed,
* its visibility is reset to true to ensure it will be visible
* if added to other containers.
* @param index the index of the tab to be removed
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #addTab
* @see #insertTab
*/
public void removeTabAt(int index) {
checkIndex(index);
Component component = getComponentAt(index);
boolean shouldChangeFocus = false;
int selected = getSelectedIndex();
String oldName = null;
/* if we're about to remove the visible component */
if (component == visComp) {
shouldChangeFocus = (SwingUtilities.findFocusOwner(visComp) != null);
visComp = null;
}
if (accessibleContext != null) {
/* if we're removing the selected page */
if (index == selected) {
/* fire an accessible notification that it's unselected */
pages.get(index).firePropertyChange(
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
AccessibleState.SELECTED, null);
oldName = accessibleContext.getAccessibleName();
}
accessibleContext.firePropertyChange(
AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
component, null);
}
// Force the tabComponent to be cleaned up.
setTabComponentAt(index, null);
pages.remove(index);
// NOTE 4/15/2002 (joutwate):
// This fix is implemented using client properties since there is
// currently no IndexPropertyChangeEvent. Once
// IndexPropertyChangeEvents have been added this code should be
// modified to use it.
putClientProperty("__index_to_remove__", Integer.valueOf(index));
/* if the selected tab is after the removal */
if (selected > index) {
setSelectedIndexImpl(selected - 1, false);
/* if the selected tab is the last tab */
} else if (selected >= getTabCount()) {
setSelectedIndexImpl(selected - 1, false);
Page newSelected = (selected != 0)
? pages.get(selected - 1)
: null;
changeAccessibleSelection(null, oldName, newSelected);
/* selected index hasn't changed, but the associated tab has */
} else if (index == selected) {
fireStateChanged();
changeAccessibleSelection(null, oldName, pages.get(index));
}
// We can't assume the tab indices correspond to the
// container's children array indices, so make sure we
// remove the correct child!
if (component != null) {
Component components[] = getComponents();
for (int i = components.length; --i >= 0; ) {
if (components[i] == component) {
super.remove(i);
component.setVisible(true);
break;
}
}
}
if (shouldChangeFocus) {
SwingUtilities2.tabbedPaneChangeFocusTo(getSelectedComponent());
}
revalidate();
repaint();
}
/**
* Removes the specified <code>Component</code> from the
* <code>JTabbedPane</code>. The method does nothing
* if the <code>component</code> is null.
*
* @param component the component to remove from the tabbedpane
* @see #addTab
* @see #removeTabAt
*/
public void remove(Component component) {
int index = indexOfComponent(component);
if (index != -1) {
removeTabAt(index);
} else {
// Container#remove(comp) invokes Container#remove(int)
// so make sure JTabbedPane#remove(int) isn't called here
Component children[] = getComponents();
for (int i=0; i < children.length; i++) {
if (component == children[i]) {
super.remove(i);
break;
}
}
}
}
/**
* Removes the tab and component which corresponds to the specified index.
*
* @param index the index of the component to remove from the
* <code>tabbedpane</code>
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
* @see #addTab
* @see #removeTabAt
*/
public void remove(int index) {
removeTabAt(index);
}
/**
* Removes all the tabs and their corresponding components
* from the <code>tabbedpane</code>.
*
* @see #addTab
* @see #removeTabAt
*/
public void removeAll() {
setSelectedIndexImpl(-1, true);
int tabCount = getTabCount();
// We invoke removeTabAt for each tab, otherwise we may end up
// removing Components added by the UI.
while (tabCount-- > 0) {
removeTabAt(tabCount);
}
}
/**
* Returns the number of tabs in this <code>tabbedpane</code>.
*
* @return an integer specifying the number of tabbed pages
*/
public int getTabCount() {
return pages.size();
}
/**
* Returns the number of tab runs currently used to display
* the tabs.
* @return an integer giving the number of rows if the
* <code>tabPlacement</code>
* is <code>TOP</code> or <code>BOTTOM</code>
* and the number of columns if
* <code>tabPlacement</code>
* is <code>LEFT</code> or <code>RIGHT</code>,
* or 0 if there is no UI set on this <code>tabbedpane</code>
*/
public int getTabRunCount() {
if (ui != null) {
return ((TabbedPaneUI)ui).getTabRunCount(this);
}
return 0;
}
// Getters for the Pages
/**
* Returns the tab title at <code>index</code>.
*
* @param index the index of the item being queried
* @return the title at <code>index</code>
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
* @see #setTitleAt
*/
public String getTitleAt(int index) {
return pages.get(index).title;
}
/**
* Returns the tab icon at <code>index</code>.
*
* @param index the index of the item being queried
* @return the icon at <code>index</code>
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #setIconAt
*/
public Icon getIconAt(int index) {
return pages.get(index).icon;
}
/**
* Returns the tab disabled icon at <code>index</code>.
* If the tab disabled icon doesn't exist at <code>index</code>
* this will forward the call to the look and feel to construct
* an appropriate disabled Icon from the corresponding enabled
* Icon. Some look and feels might not render the disabled Icon,
* in which case it won't be created.
*
* @param index the index of the item being queried
* @return the icon at <code>index</code>
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #setDisabledIconAt
*/
public Icon getDisabledIconAt(int index) {
Page page = pages.get(index);
if (page.disabledIcon == null) {
page.disabledIcon = UIManager.getLookAndFeel().getDisabledIcon(this, page.icon);
}
return page.disabledIcon;
}
/**
* Returns the tab tooltip text at <code>index</code>.
*
* @param index the index of the item being queried
* @return a string containing the tool tip text at <code>index</code>
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #setToolTipTextAt
* @since 1.3
*/
public String getToolTipTextAt(int index) {
return pages.get(index).tip;
}
/**
* Returns the tab background color at <code>index</code>.
*
* @param index the index of the item being queried
* @return the <code>Color</code> of the tab background at
* <code>index</code>
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #setBackgroundAt
*/
public Color getBackgroundAt(int index) {
return pages.get(index).getBackground();
}
/**
* Returns the tab foreground color at <code>index</code>.
*
* @param index the index of the item being queried
* @return the <code>Color</code> of the tab foreground at
* <code>index</code>
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #setForegroundAt
*/
public Color getForegroundAt(int index) {
return pages.get(index).getForeground();
}
/**
* Returns whether or not the tab at <code>index</code> is
* currently enabled.
*
* @param index the index of the item being queried
* @return true if the tab at <code>index</code> is enabled;
* false otherwise
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #setEnabledAt
*/
public boolean isEnabledAt(int index) {
return pages.get(index).isEnabled();
}
/**
* Returns the component at <code>index</code>.
*
* @param index the index of the item being queried
* @return the <code>Component</code> at <code>index</code>
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #setComponentAt
*/
public Component getComponentAt(int index) {
return pages.get(index).component;
}
/**
* Returns the keyboard mnemonic for accessing the specified tab.
* The mnemonic is the key which when combined with the look and feel's
* mouseless modifier (usually Alt) will activate the specified
* tab.
*
* @since 1.4
* @param tabIndex the index of the tab that the mnemonic refers to
* @return the key code which represents the mnemonic;
* -1 if a mnemonic is not specified for the tab
* @exception IndexOutOfBoundsException if index is out of range
* (<code>tabIndex</code> < 0 ||
* <code>tabIndex</code> >= tab count)
* @see #setDisplayedMnemonicIndexAt(int,int)
* @see #setMnemonicAt(int,int)
*/
public int getMnemonicAt(int tabIndex) {
checkIndex(tabIndex);
Page page = pages.get(tabIndex);
return page.getMnemonic();
}
/**
* Returns the character, as an index, that the look and feel should
* provide decoration for as representing the mnemonic character.
*
* @since 1.4
* @param tabIndex the index of the tab that the mnemonic refers to
* @return index representing mnemonic character if one exists;
* otherwise returns -1
* @exception IndexOutOfBoundsException if index is out of range
* (<code>tabIndex</code> < 0 ||
* <code>tabIndex</code> >= tab count)
* @see #setDisplayedMnemonicIndexAt(int,int)
* @see #setMnemonicAt(int,int)
*/
public int getDisplayedMnemonicIndexAt(int tabIndex) {
checkIndex(tabIndex);
Page page = pages.get(tabIndex);
return page.getDisplayedMnemonicIndex();
}
/**
* Returns the tab bounds at <code>index</code>. If the tab at
* this index is not currently visible in the UI, then returns
* <code>null</code>.
* If there is no UI set on this <code>tabbedpane</code>,
* then returns <code>null</code>.
*
* @param index the index to be queried
* @return a <code>Rectangle</code> containing the tab bounds at
* <code>index</code>, or <code>null</code> if tab at
* <code>index</code> is not currently visible in the UI,
* or if there is no UI set on this <code>tabbedpane</code>
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*/
public Rectangle getBoundsAt(int index) {
checkIndex(index);
if (ui != null) {
return ((TabbedPaneUI)ui).getTabBounds(this, index);
}
return null;
}
// Setters for the Pages
/**
* Sets the title at <code>index</code> to <code>title</code> which
* can be <code>null</code>.
* The title is not shown if a tab component for this tab was specified.
* An internal exception is raised if there is no tab at that index.
*
* @param index the tab index where the title should be set
* @param title the title to be displayed in the tab
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #getTitleAt
* @see #setTabComponentAt
* @beaninfo
* preferred: true
* attribute: visualUpdate true
* description: The title at the specified tab index.
*/
public void setTitleAt(int index, String title) {
Page page = pages.get(index);
String oldTitle =page.title;
page.title = title;
if (oldTitle != title) {
firePropertyChange("indexForTitle", -1, index);
}
page.updateDisplayedMnemonicIndex();
if ((oldTitle != title) && (accessibleContext != null)) {
accessibleContext.firePropertyChange(
AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
oldTitle, title);
}
if (title == null || oldTitle == null ||
!title.equals(oldTitle)) {
revalidate();
repaint();
}
}
/**
* Sets the icon at <code>index</code> to <code>icon</code> which can be
* <code>null</code>. This does not set disabled icon at <code>icon</code>.
* If the new Icon is different than the current Icon and disabled icon
* is not explicitly set, the LookAndFeel will be asked to generate a disabled
* Icon. To explicitly set disabled icon, use <code>setDisableIconAt()</code>.
* The icon is not shown if a tab component for this tab was specified.
* An internal exception is raised if there is no tab at that index.
*
* @param index the tab index where the icon should be set
* @param icon the icon to be displayed in the tab
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #setDisabledIconAt
* @see #getIconAt
* @see #getDisabledIconAt
* @see #setTabComponentAt
* @beaninfo
* preferred: true
* attribute: visualUpdate true
* description: The icon at the specified tab index.
*/
public void setIconAt(int index, Icon icon) {
Page page = pages.get(index);
Icon oldIcon = page.icon;
if (icon != oldIcon) {
page.icon = icon;
/* If the default icon has really changed and we had
* generated the disabled icon for this page, then
* clear the disabledIcon field of the page.
*/
if (page.disabledIcon instanceof UIResource) {
page.disabledIcon = null;
}
// Fire the accessibility Visible data change
if (accessibleContext != null) {
accessibleContext.firePropertyChange(
AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
oldIcon, icon);
}
revalidate();
repaint();
}
}
/**
* Sets the disabled icon at <code>index</code> to <code>icon</code>
* which can be <code>null</code>.
* An internal exception is raised if there is no tab at that index.
*
* @param index the tab index where the disabled icon should be set
* @param disabledIcon the icon to be displayed in the tab when disabled
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #getDisabledIconAt
* @beaninfo
* preferred: true
* attribute: visualUpdate true
* description: The disabled icon at the specified tab index.
*/
public void setDisabledIconAt(int index, Icon disabledIcon) {
Icon oldIcon = pages.get(index).disabledIcon;
pages.get(index).disabledIcon = disabledIcon;
if (disabledIcon != oldIcon && !isEnabledAt(index)) {
revalidate();
repaint();
}
}
/**
* Sets the tooltip text at <code>index</code> to <code>toolTipText</code>
* which can be <code>null</code>.
* An internal exception is raised if there is no tab at that index.
*
* @param index the tab index where the tooltip text should be set
* @param toolTipText the tooltip text to be displayed for the tab
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #getToolTipTextAt
* @beaninfo
* preferred: true
* description: The tooltip text at the specified tab index.
* @since 1.3
*/
public void setToolTipTextAt(int index, String toolTipText) {
String oldToolTipText = pages.get(index).tip;
pages.get(index).tip = toolTipText;
if ((oldToolTipText != toolTipText) && (accessibleContext != null)) {
accessibleContext.firePropertyChange(
AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
oldToolTipText, toolTipText);
}
if (!haveRegistered && toolTipText != null) {
ToolTipManager.sharedInstance().registerComponent(this);
haveRegistered = true;
}
}
/**
* Sets the background color at <code>index</code> to
* <code>background</code>
* which can be <code>null</code>, in which case the tab's background color
* will default to the background color of the <code>tabbedpane</code>.
* An internal exception is raised if there is no tab at that index.
* <p>
* It is up to the look and feel to honor this property, some may
* choose to ignore it.
*
* @param index the tab index where the background should be set
* @param background the color to be displayed in the tab's background
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #getBackgroundAt
* @beaninfo
* preferred: true
* attribute: visualUpdate true
* description: The background color at the specified tab index.
*/
public void setBackgroundAt(int index, Color background) {
Color oldBg = pages.get(index).background;
pages.get(index).setBackground(background);
if (background == null || oldBg == null ||
!background.equals(oldBg)) {
Rectangle tabBounds = getBoundsAt(index);
if (tabBounds != null) {
repaint(tabBounds);
}
}
}
/**
* Sets the foreground color at <code>index</code> to
* <code>foreground</code> which can be
* <code>null</code>, in which case the tab's foreground color
* will default to the foreground color of this <code>tabbedpane</code>.
* An internal exception is raised if there is no tab at that index.
* <p>
* It is up to the look and feel to honor this property, some may
* choose to ignore it.
*
* @param index the tab index where the foreground should be set
* @param foreground the color to be displayed as the tab's foreground
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #getForegroundAt
* @beaninfo
* preferred: true
* attribute: visualUpdate true
* description: The foreground color at the specified tab index.
*/
public void setForegroundAt(int index, Color foreground) {
Color oldFg = pages.get(index).foreground;
pages.get(index).setForeground(foreground);
if (foreground == null || oldFg == null ||
!foreground.equals(oldFg)) {
Rectangle tabBounds = getBoundsAt(index);
if (tabBounds != null) {
repaint(tabBounds);
}
}
}
/**
* Sets whether or not the tab at <code>index</code> is enabled.
* An internal exception is raised if there is no tab at that index.
*
* @param index the tab index which should be enabled/disabled
* @param enabled whether or not the tab should be enabled
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #isEnabledAt
*/
public void setEnabledAt(int index, boolean enabled) {
boolean oldEnabled = pages.get(index).isEnabled();
pages.get(index).setEnabled(enabled);
if (enabled != oldEnabled) {
revalidate();
repaint();
}
}
/**
* Sets the component at <code>index</code> to <code>component</code>.
* An internal exception is raised if there is no tab at that index.
*
* @param index the tab index where this component is being placed
* @param component the component for the tab
* @exception IndexOutOfBoundsException if index is out of range
* {@code (index < 0 || index >= tab count)}
*
* @see #getComponentAt
* @beaninfo
* attribute: visualUpdate true
* description: The component at the specified tab index.
*/
public void setComponentAt(int index, Component component) {
Page page = pages.get(index);
if (component != page.component) {
boolean shouldChangeFocus = false;
if (page.component != null) {
shouldChangeFocus =
(SwingUtilities.findFocusOwner(page.component) != null);
// REMIND(aim): this is really silly;
// why not if (page.component.getParent() == this) remove(component)
synchronized(getTreeLock()) {
int count = getComponentCount();
Component children[] = getComponents();
for (int i = 0; i < count; i++) {
if (children[i] == page.component) {
super.remove(i);
}
}
}
}
page.component = component;
boolean selectedPage = (getSelectedIndex() == index);
if (selectedPage) {
this.visComp = component;
}
if (component != null) {
component.setVisible(selectedPage);
addImpl(component, null, -1);
if (shouldChangeFocus) {
SwingUtilities2.tabbedPaneChangeFocusTo(component);
}
} else {
repaint();
}
revalidate();
}
}
/**
* Provides a hint to the look and feel as to which character in the
* text should be decorated to represent the mnemonic. Not all look and
* feels may support this. A value of -1 indicates either there is
* no mnemonic for this tab, or you do not wish the mnemonic to be
* displayed for this tab.
* <p>
* The value of this is updated as the properties relating to the
* mnemonic change (such as the mnemonic itself, the text...).
* You should only ever have to call this if
* you do not wish the default character to be underlined. For example, if
* the text at tab index 3 was 'Apple Price', with a mnemonic of 'p',
* and you wanted the 'P'
* to be decorated, as 'Apple <u>P</u>rice', you would have to invoke
* <code>setDisplayedMnemonicIndex(3, 6)</code> after invoking
* <code>setMnemonicAt(3, KeyEvent.VK_P)</code>.
* <p>Note that it is the programmer's responsibility to ensure
* that each tab has a unique mnemonic or unpredictable results may
* occur.
*
* @since 1.4
* @param tabIndex the index of the tab that the mnemonic refers to
* @param mnemonicIndex index into the <code>String</code> to underline
* @exception IndexOutOfBoundsException if <code>tabIndex</code> is
* out of range ({@code tabIndex < 0 || tabIndex >= tab
* count})
* @exception IllegalArgumentException will be thrown if
* <code>mnemonicIndex</code> is >= length of the tab
* title , or < -1
* @see #setMnemonicAt(int,int)
* @see #getDisplayedMnemonicIndexAt(int)
*
* @beaninfo
* bound: true
* attribute: visualUpdate true
* description: the index into the String to draw the keyboard character
* mnemonic at
*/
public void setDisplayedMnemonicIndexAt(int tabIndex, int mnemonicIndex) {
checkIndex(tabIndex);
Page page = pages.get(tabIndex);
page.setDisplayedMnemonicIndex(mnemonicIndex);
}
/**
* Sets the keyboard mnemonic for accessing the specified tab.
* The mnemonic is the key which when combined with the look and feel's
* mouseless modifier (usually Alt) will activate the specified
* tab.
* <p>
* A mnemonic must correspond to a single key on the keyboard
* and should be specified using one of the <code>VK_XXX</code>
* keycodes defined in <code>java.awt.event.KeyEvent</code>
* or one of the extended keycodes obtained through
* <code>java.awt.event.KeyEvent.getExtendedKeyCodeForChar</code>.
* Mnemonics are case-insensitive, therefore a key event
* with the corresponding keycode would cause the button to be
* activated whether or not the Shift modifier was pressed.
* <p>
* This will update the displayed mnemonic property for the specified
* tab.
*
* @since 1.4
* @param tabIndex the index of the tab that the mnemonic refers to
* @param mnemonic the key code which represents the mnemonic
* @exception IndexOutOfBoundsException if <code>tabIndex</code> is out
* of range ({@code tabIndex < 0 || tabIndex >= tab count})
* @see #getMnemonicAt(int)
* @see #setDisplayedMnemonicIndexAt(int,int)
*
* @beaninfo
* bound: true
* attribute: visualUpdate true
* description: The keyboard mnenmonic, as a KeyEvent VK constant,
* for the specified tab
*/
public void setMnemonicAt(int tabIndex, int mnemonic) {
checkIndex(tabIndex);
Page page = pages.get(tabIndex);
page.setMnemonic(mnemonic);
firePropertyChange("mnemonicAt", null, null);
}
// end of Page setters
/**
* Returns the first tab index with a given <code>title</code>, or
* -1 if no tab has this title.
*
* @param title the title for the tab
* @return the first tab index which matches <code>title</code>, or
* -1 if no tab has this title
*/
public int indexOfTab(String title) {
for(int i = 0; i < getTabCount(); i++) {
if (getTitleAt(i).equals(title == null? "" : title)) {
return i;
}
}
return -1;
}
/**
* Returns the first tab index with a given <code>icon</code>,
* or -1 if no tab has this icon.
*
* @param icon the icon for the tab
* @return the first tab index which matches <code>icon</code>,
* or -1 if no tab has this icon
*/
public int indexOfTab(Icon icon) {
for(int i = 0; i < getTabCount(); i++) {
Icon tabIcon = getIconAt(i);
if ((tabIcon != null && tabIcon.equals(icon)) ||
(tabIcon == null && tabIcon == icon)) {
return i;
}
}
return -1;
}
/**
* Returns the index of the tab for the specified component.
* Returns -1 if there is no tab for this component.
*
* @param component the component for the tab
* @return the first tab which matches this component, or -1
* if there is no tab for this component
*/
public int indexOfComponent(Component component) {
for(int i = 0; i < getTabCount(); i++) {
Component c = getComponentAt(i);
if ((c != null && c.equals(component)) ||
(c == null && c == component)) {
return i;
}
}
return -1;
}
/**
* Returns the tab index corresponding to the tab whose bounds
* intersect the specified location. Returns -1 if no tab
* intersects the location.
*
* @param x the x location relative to this tabbedpane
* @param y the y location relative to this tabbedpane
* @return the tab index which intersects the location, or
* -1 if no tab intersects the location
* @since 1.4
*/
public int indexAtLocation(int x, int y) {
if (ui != null) {
return ((TabbedPaneUI)ui).tabForCoordinate(this, x, y);
}
return -1;
}
/**
* Returns the tooltip text for the component determined by the
* mouse event location.
*
* @param event the <code>MouseEvent</code> that tells where the
* cursor is lingering
* @return the <code>String</code> containing the tooltip text
*/
public String getToolTipText(MouseEvent event) {
if (ui != null) {
int index = ((TabbedPaneUI)ui).tabForCoordinate(this, event.getX(), event.getY());
if (index != -1) {
return pages.get(index).tip;
}
}
return super.getToolTipText(event);
}
private void checkIndex(int index) {
if (index < 0 || index >= pages.size()) {
throw new IndexOutOfBoundsException("Index: "+index+", Tab count: "+pages.size());
}
}
/**
* See <code>readObject</code> and <code>writeObject</code> in
* <code>JComponent</code> for more
* information about serialization in Swing.
*/
private void writeObject(ObjectOutputStream s) throws IOException {
s.defaultWriteObject();
if (getUIClassID().equals(uiClassID)) {
byte count = JComponent.getWriteObjCounter(this);
JComponent.setWriteObjCounter(this, --count);
if (count == 0 && ui != null) {
ui.installUI(this);
}
}
}
/* Called from the <code>JComponent</code>'s
* <code>EnableSerializationFocusListener</code> to
* do any Swing-specific pre-serialization configuration.
*/
void compWriteObjectNotify() {
super.compWriteObjectNotify();
// If ToolTipText != null, then the tooltip has already been
// unregistered by JComponent.compWriteObjectNotify()
if (getToolTipText() == null && haveRegistered) {
ToolTipManager.sharedInstance().unregisterComponent(this);
}
}
/**
* See <code>readObject</code> and <code>writeObject</code> in
* <code>JComponent</code> for more
* information about serialization in Swing.
*/
private void readObject(ObjectInputStream s)
throws IOException, ClassNotFoundException
{
s.defaultReadObject();
if ((ui != null) && (getUIClassID().equals(uiClassID))) {
ui.installUI(this);
}
// If ToolTipText != null, then the tooltip has already been
// registered by JComponent.readObject()
if (getToolTipText() == null && haveRegistered) {
ToolTipManager.sharedInstance().registerComponent(this);
}
}
/**
* Returns a string representation of this <code>JTabbedPane</code>.
* This method
* is intended to be used only for debugging purposes, and the
* content and format of the returned string may vary between
* implementations. The returned string may be empty but may not
* be <code>null</code>.
*
* @return a string representation of this JTabbedPane.
*/
protected String paramString() {
String tabPlacementString;
if (tabPlacement == TOP) {
tabPlacementString = "TOP";
} else if (tabPlacement == BOTTOM) {
tabPlacementString = "BOTTOM";
} else if (tabPlacement == LEFT) {
tabPlacementString = "LEFT";
} else if (tabPlacement == RIGHT) {
tabPlacementString = "RIGHT";
} else tabPlacementString = "";
String haveRegisteredString = (haveRegistered ?
"true" : "false");
return super.paramString() +
",haveRegistered=" + haveRegisteredString +
",tabPlacement=" + tabPlacementString;
}
/////////////////
// Accessibility support
////////////////
/**
* Gets the AccessibleContext associated with this JTabbedPane.
* For tabbed panes, the AccessibleContext takes the form of an
* AccessibleJTabbedPane.
* A new AccessibleJTabbedPane instance is created if necessary.
*
* @return an AccessibleJTabbedPane that serves as the
* AccessibleContext of this JTabbedPane
*/
public AccessibleContext getAccessibleContext() {
if (accessibleContext == null) {
accessibleContext = new AccessibleJTabbedPane();
// initialize AccessibleContext for the existing pages
int count = getTabCount();
for (int i = 0; i < count; i++) {
pages.get(i).initAccessibleContext();
}
}
return accessibleContext;
}
/**
* This class implements accessibility support for the
* <code>JTabbedPane</code> class. It provides an implementation of the
* Java Accessibility API appropriate to tabbed pane user-interface
* elements.
* <p>
* <strong>Warning:</strong>
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is
* appropriate for short term storage or RMI between applications running
* the same version of Swing. As of 1.4, support for long term storage
* of all JavaBeans™
* has been added to the <code>java.beans</code> package.
* Please see {@link java.beans.XMLEncoder}.
*/
protected class AccessibleJTabbedPane extends AccessibleJComponent
implements AccessibleSelection, ChangeListener {
/**
* Returns the accessible name of this object, or {@code null} if
* there is no accessible name.
*
* @return the accessible name of this object, nor {@code null}.
* @since 1.6
*/
public String getAccessibleName() {
if (accessibleName != null) {
return accessibleName;
}
String cp = (String)getClientProperty(AccessibleContext.ACCESSIBLE_NAME_PROPERTY);
if (cp != null) {
return cp;
}
int index = getSelectedIndex();
if (index >= 0) {
return pages.get(index).getAccessibleName();
}
return super.getAccessibleName();
}
/**
* Constructs an AccessibleJTabbedPane
*/
public AccessibleJTabbedPane() {
super();
JTabbedPane.this.model.addChangeListener(this);
}
public void stateChanged(ChangeEvent e) {
Object o = e.getSource();
firePropertyChange(AccessibleContext.ACCESSIBLE_SELECTION_PROPERTY,
null, o);
}
/**
* Get the role of this object.
*
* @return an instance of AccessibleRole describing the role of
* the object
*/
public AccessibleRole getAccessibleRole() {
return AccessibleRole.PAGE_TAB_LIST;
}
/**
* Returns the number of accessible children in the object.
*
* @return the number of accessible children in the object.
*/
public int getAccessibleChildrenCount() {
return getTabCount();
}
/**
* Return the specified Accessible child of the object.
*
* @param i zero-based index of child
* @return the Accessible child of the object
* @exception IllegalArgumentException if index is out of bounds
*/
public Accessible getAccessibleChild(int i) {
if (i < 0 || i >= getTabCount()) {
return null;
}
return pages.get(i);
}
/**
* Gets the <code>AccessibleSelection</code> associated with
* this object. In the implementation of the Java
* Accessibility API for this class,
* returns this object, which is responsible for implementing the
* <code>AccessibleSelection</code> interface on behalf of itself.
*
* @return this object
*/
public AccessibleSelection getAccessibleSelection() {
return this;
}
/**
* Returns the <code>Accessible</code> child contained at
* the local coordinate <code>Point</code>, if one exists.
* Otherwise returns the currently selected tab.
*
* @return the <code>Accessible</code> at the specified
* location, if it exists
*/
public Accessible getAccessibleAt(Point p) {
int tab = ((TabbedPaneUI) ui).tabForCoordinate(JTabbedPane.this,
p.x, p.y);
if (tab == -1) {
tab = getSelectedIndex();
}
return getAccessibleChild(tab);
}
public int getAccessibleSelectionCount() {
return 1;
}
public Accessible getAccessibleSelection(int i) {
int index = getSelectedIndex();
if (index == -1) {
return null;
}
return pages.get(index);
}
public boolean isAccessibleChildSelected(int i) {
return (i == getSelectedIndex());
}
public void addAccessibleSelection(int i) {
setSelectedIndex(i);
}
public void removeAccessibleSelection(int i) {
// can't do
}
public void clearAccessibleSelection() {
// can't do
}
public void selectAllAccessibleSelection() {
// can't do
}
}
private class Page extends AccessibleContext
implements Serializable, Accessible, AccessibleComponent {
String title;
Color background;
Color foreground;
Icon icon;
Icon disabledIcon;
JTabbedPane parent;
Component component;
String tip;
boolean enabled = true;
boolean needsUIUpdate;
int mnemonic = -1;
int mnemonicIndex = -1;
Component tabComponent;
Page(JTabbedPane parent,
String title, Icon icon, Icon disabledIcon, Component component, String tip) {
this.title = title;
this.icon = icon;
this.disabledIcon = disabledIcon;
this.parent = parent;
this.setAccessibleParent(parent);
this.component = component;
this.tip = tip;
initAccessibleContext();
}
/*
* initializes the AccessibleContext for the page
*/
void initAccessibleContext() {
if (JTabbedPane.this.accessibleContext != null &&
component instanceof Accessible) {
/*
* Do initialization if the AccessibleJTabbedPane
* has been instantiated. We do not want to load
* Accessibility classes unnecessarily.
*/
AccessibleContext ac;
ac = component.getAccessibleContext();
if (ac != null) {
ac.setAccessibleParent(this);
}
}
}
void setMnemonic(int mnemonic) {
this.mnemonic = mnemonic;
updateDisplayedMnemonicIndex();
}
int getMnemonic() {
return mnemonic;
}
/*
* Sets the page displayed mnemonic index
*/
void setDisplayedMnemonicIndex(int mnemonicIndex) {
if (this.mnemonicIndex != mnemonicIndex) {
if (mnemonicIndex != -1 && (title == null ||
mnemonicIndex < 0 ||
mnemonicIndex >= title.length())) {
throw new IllegalArgumentException(
"Invalid mnemonic index: " + mnemonicIndex);
}
this.mnemonicIndex = mnemonicIndex;
JTabbedPane.this.firePropertyChange("displayedMnemonicIndexAt",
null, null);
}
}
/*
* Returns the page displayed mnemonic index
*/
int getDisplayedMnemonicIndex() {
return this.mnemonicIndex;
}
void updateDisplayedMnemonicIndex() {
setDisplayedMnemonicIndex(
SwingUtilities.findDisplayedMnemonicIndex(title, mnemonic));
}
/////////////////
// Accessibility support
////////////////
public AccessibleContext getAccessibleContext() {
return this;
}
// AccessibleContext methods
public String getAccessibleName() {
if (accessibleName != null) {
return accessibleName;
} else if (title != null) {
return title;
}
return null;
}
public String getAccessibleDescription() {
if (accessibleDescription != null) {
return accessibleDescription;
} else if (tip != null) {
return tip;
}
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