/*******************************************************************************
* Copyright (c) 2000, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Stefan Xenos, IBM; Chris Torrence, ITT Visual Information Solutions - bug 51580
*******************************************************************************/
package org.eclipse.ui.internal;
import org.eclipse.core.runtime.ListenerList;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.FocusAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.TraverseEvent;
import org.eclipse.swt.events.TraverseListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Sash;
import org.eclipse.ui.IPropertyListener;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchPartReference;
import org.eclipse.ui.internal.dnd.SwtUtil;
import org.eclipse.ui.part.MultiEditor;
import org.eclipse.ui.presentations.IPresentablePart;
/**
* Provides the common behavior for both views
* and editor panes.
*
* TODO: Delete ViewPane and EditorPane, and make this class non-abstract.
*
* TODO: Stop subclassing LayoutPart. This class cannot be interchanged with other LayoutParts.
* Pointers that refer to PartPane instances should do so directly rather than referring to
* LayoutPart and downcasting. The getPresentablePart() method only applies to PartPanes, and
* should be removed from LayoutPart.
*/
public abstract class PartPane extends LayoutPart implements IPropertyListener,
Listener, IPropertyChangeListener {
public static final String PROP_ZOOMED = "zoomed"; //$NON-NLS-1$
private boolean isZoomed = false;
private MenuManager paneMenuManager;
private ListenerList listeners = new ListenerList();
private ListenerList partListeners = new ListenerList();
protected IWorkbenchPartReference partReference;
protected WorkbenchPage page;
protected Composite control;
private boolean inLayout = true;
private TraverseListener traverseListener = new TraverseListener() {
/* (non-Javadoc)
* @see org.eclipse.swt.events.TraverseListener#keyTraversed(org.eclipse.swt.events.TraverseEvent)
*/
public void keyTraversed(TraverseEvent e) {
// Hack: Currently, SWT sets focus whenever we call Control.traverse. This doesn't
// cause too much of a problem for ctrl-pgup and ctrl-pgdn, but it is seriously unexpected
// for other traversal events. When (and if) it becomes possible to call traverse() without
// forcing a focus change, this if statement should be removed and ALL events should be
// forwarded to the container.
if (e.detail == SWT.TRAVERSE_PAGE_NEXT
|| e.detail == SWT.TRAVERSE_PAGE_PREVIOUS) {
ILayoutContainer container = getContainer();
if (container != null && container instanceof LayoutPart) {
LayoutPart parent = (LayoutPart) container;
Control parentControl = parent.getControl();
if (parentControl != null && !parentControl.isDisposed()) {
e.doit = parentControl.traverse(e.detail);
if (e.doit) {
e.detail = SWT.TRAVERSE_NONE;
}
}
}
}
}
};
private boolean busy;
public static class Sashes {
public Sash left;
public Sash right;
public Sash top;
public Sash bottom;
}
/**
* Construct a pane for a part.
*/
public PartPane(IWorkbenchPartReference partReference,
WorkbenchPage workbenchPage) {
super(partReference.getId());
this.partReference = partReference;
this.page = workbenchPage;
}
public void addSizeMenuItem(Menu menu, int index) {
//Add size menu
MenuItem item = new MenuItem(menu, SWT.CASCADE, index);
item.setText(WorkbenchMessages.PartPane_size);
Menu sizeMenu = new Menu(menu);
item.setMenu(sizeMenu);
addSizeItems(sizeMenu);
}
/**
*
*/
public void createControl(Composite parent) {
if (getControl() != null) {
return;
}
partReference.addPropertyListener(this);
partReference.addPartPropertyListener(this);
// Create view form.
control = new Composite(parent, SWT.NONE);
control.setLayout(new FillLayout());
// the part should never be visible by default. It will be made visible
// by activation. This allows us to have views appear in tabs without
// becoming active by default.
control.setVisible(false);
control.moveAbove(null);
// Create a title bar.
createTitleBar();
// When the pane or any child gains focus, notify the workbench.
control.addListener(SWT.Activate, this);
control.addTraverseListener(traverseListener);
}
/**
* Create a title bar for the pane if required.
*/
protected abstract void createTitleBar();
/**
* @private
*/
public void dispose() {
super.dispose();
if ((control != null) && (!control.isDisposed())) {
control.removeListener(SWT.Activate, this);
control.removeTraverseListener(traverseListener);
control.dispose();
control = null;
}
if ((paneMenuManager != null)) {
paneMenuManager.dispose();
paneMenuManager = null;
}
partReference.removePropertyListener(this);
partReference.removePartPropertyListener(this);
}
/**
* User has requested to close the pane.
* Take appropriate action depending on type.
*/
abstract public void doHide();
/**
* Zooms in on the part contained in this pane.
*/
protected void doZoom() {
if (isDocked()) {
page.toggleZoom(partReference);
}
}
/**
* Gets the presentation bounds.
*/
public Rectangle getBounds() {
return getControl().getBounds();
}
/**
* Get the control.
*/
public Control getControl() {
return control;
}
/**
* Answer the part child.
*/
public IWorkbenchPartReference getPartReference() {
return partReference;
}
/**
* @see Listener
*/
public void handleEvent(Event event) {
if (event.type == SWT.Activate) {
if (inLayout) {
requestActivation();
}
}
}
/**
* Return whether the pane is zoomed or not
*/
public boolean isZoomed() {
return isZoomed;
}
/**
* Move the control over another one.
*/
public void moveAbove(Control refControl) {
if (getControl() != null) {
getControl().moveAbove(refControl);
}
}
/**
* Notify the workbook page that the part pane has
* been activated by the user.
*/
public void requestActivation() {
IWorkbenchPart part = partReference.getPart(true);
// Cannot activate the outer bit of a MultiEditor. In previous versions of the
// workbench, MultiEditors had their own implementation of EditorPane for the purpose
// of overriding requestActivation with a NOP... however, keeping the old pattern would
// mean it is necessary to eagerly activate an editor's plugin in order to determine
// what type of pane to create.
if (part instanceof MultiEditor) {
return;
}
this.page.requestActivation(part);
}
/**
* Sets the parent for this part.
*/
public void setContainer(ILayoutContainer container) {
if (container instanceof LayoutPart) {
LayoutPart part = (LayoutPart) container;
Control containerControl = part.getControl();
if (containerControl != null) {
Control control = getControl();
Composite newParent = containerControl.getParent();
if (control != null && newParent != control.getParent()) {
reparent(newParent);
}
}
}
super.setContainer(container);
}
/**
* Shows the receiver if <code>visible</code> is true otherwise hide it.
*/
public void setVisible(boolean makeVisible) {
// Avoid redundant visibility changes
if (makeVisible == getVisible()) {
return;
}
if (makeVisible) {
partReference.getPart(true);
}
super.setVisible(makeVisible);
((WorkbenchPartReference) partReference).fireVisibilityChange();
}
/**
* Sets focus to this part.
*/
public void setFocus() {
requestActivation();
IWorkbenchPart part = partReference.getPart(true);
if (part != null) {
Control control = getControl();
if (!SwtUtil.isFocusAncestor(control)) {
// First try to call part.setFocus
part.setFocus();
}
}
}
/**
* Sets the workbench page of the view.
*/
public void setWorkbenchPage(WorkbenchPage workbenchPage) {
this.page = workbenchPage;
}
/**
* Set whether the pane is zoomed or not
*/
public void setZoomed(boolean isZoomed) {
if (this.isZoomed == isZoomed) {
return; // do nothing if we're already in the right state.
}
super.setZoomed(isZoomed);
this.isZoomed = isZoomed;
((WorkbenchPartReference) partReference).fireZoomChange();
}
/**
* Informs the pane that it's window shell has
* been activated.
*/
/* package */abstract void shellActivated();
/**
* Informs the pane that it's window shell has
* been deactivated.
*/
/* package */abstract void shellDeactivated();
/**
* Indicate focus in part.
*/
public abstract void showFocus(boolean inFocus);
/**
* @see IPartDropTarget::targetPartFor
*/
public LayoutPart targetPartFor(LayoutPart dragSource) {
return this;
}
/**
* Returns the PartStack that contains this PartPane, or null if none.
*
* @return
*/
public PartStack getStack() {
ILayoutContainer container = getContainer();
if (container instanceof PartStack) {
return (PartStack) container;
}
return null;
}
/**
* Show a title label menu for this pane.
*/
public void showPaneMenu() {
PartStack folder = getStack();
if (folder != null) {
folder.showPaneMenu();
}
}
/**
* Show the context menu for this part.
*/
public void showSystemMenu() {
PartStack folder = getStack();
if (folder != null) {
folder.showSystemMenu();
}
}
/**
* Finds and return the sashes around this part.
*/
protected Sashes findSashes() {
Sashes result = new Sashes();
ILayoutContainer container = getContainer();
if (container == null) {
return result;
}
container.findSashes(this, result);
return result;
}
/**
* Enable the user to resize this part using
* the keyboard to move the specified sash
*/
protected void moveSash(final Sash sash) {
moveSash(sash, this);
}
public static void moveSash(final Sash sash,
final LayoutPart toGetFocusWhenDone) {
final KeyListener listener = new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.character == SWT.ESC || e.character == '\r') {
if (toGetFocusWhenDone != null) {
toGetFocusWhenDone.setFocus();
}
}
}
};
sash.addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent e) {
sash.setBackground(sash.getDisplay().getSystemColor(
SWT.COLOR_LIST_SELECTION));
sash.addKeyListener(listener);
}
public void focusLost(FocusEvent e) {
sash.setBackground(null);
sash.removeKeyListener(listener);
}
});
sash.setFocus();
}
/**
* Add a menu item to the Size Menu
*/
protected void addSizeItem(Menu sizeMenu, String labelMessage,
final Sash sash) {
MenuItem item = new MenuItem(sizeMenu, SWT.NONE);
item.setText(labelMessage);
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
moveSash(sash);
}
});
item.setEnabled(!isZoomed() && sash != null);
}
/**
* Returns the workbench page of this pane.
*/
public WorkbenchPage getPage() {
return page;
}
/**
* Add the Left,Right,Up,Botton menu items to the Size menu.
*/
protected void addSizeItems(Menu sizeMenu) {
Sashes sashes = findSashes();
addSizeItem(sizeMenu,
WorkbenchMessages.PartPane_sizeLeft, sashes.left);
addSizeItem(sizeMenu,
WorkbenchMessages.PartPane_sizeRight, sashes.right);
addSizeItem(sizeMenu,
WorkbenchMessages.PartPane_sizeTop, sashes.top);
addSizeItem(sizeMenu, WorkbenchMessages.PartPane_sizeBottom, sashes.bottom);
}
/**
* Pin this part.
*/
protected void doDock() {
// do nothing
}
/**
* Set the busy state of the pane.
*/
public void setBusy(boolean isBusy) {
if (isBusy != busy) {
busy = isBusy;
firePropertyChange(IPresentablePart.PROP_BUSY);
}
}
/**
* Show a highlight for the receiver if it is
* not currently the part in the front of its
* presentation.
*
*/
public void showHighlight() {
//No nothing by default
}
/**
* @return
*/
public abstract Control getToolBar();
/**
* @return
*/
public boolean hasViewMenu() {
return false;
}
/**
* @param location
*/
public void showViewMenu(Point location) {
}
public boolean isBusy() {
return busy;
}
/**
* Writes a description of the layout to the given string buffer.
* This is used for drag-drop test suites to determine if two layouts are the
* same. Like a hash code, the description should compare as equal iff the
* layouts are the same. However, it should be user-readable in order to
* help debug failed tests. Although these are english readable strings,
* they do not need to be translated.
*
* @param buf
*/
public void describeLayout(StringBuffer buf) {
IWorkbenchPartReference part = getPartReference();
if (part != null) {
buf.append(part.getPartName());
return;
}
}
/**
* @return
* @since 3.1
*/
public abstract boolean isCloseable();
public void setInLayout(boolean inLayout) {
this.inLayout = inLayout;
}
public boolean getInLayout() {
return inLayout;
}
public boolean allowsAutoFocus() {
if (!inLayout) {
return false;
}
return super.allowsAutoFocus();
}
/**
* Clears all contribution items from the contribution managers (this is done separately
* from dispose() since it is done after the part is disposed). This is a bit of a hack.
* Really, the contribution managers should be part of the site, not the PartPane. If these
* were moved elsewhere, then disposal of the PartPane would be atomic and this method could
* be removed.
*/
public void removeContributions() {
}
public void addPropertyListener(IPropertyListener listener) {
listeners.add(listener);
}
public void removePropertyListener(IPropertyListener listener) {
listeners.remove(listener);
}
public void firePropertyChange(int propertyId) {
Object listeners[] = this.listeners.getListeners();
for (int i = 0; i < listeners.length; i++) {
((IPropertyListener) listeners[i]).propertyChanged(this, propertyId);
}
}
public void propertyChanged(Object source, int propId) {
firePropertyChange(propId);
}
public void addPartPropertyListener(IPropertyChangeListener listener) {
partListeners.add(listener);
}
public void removePartPropertyListener(IPropertyChangeListener listener) {
partListeners.remove(listener);
}
public void firePartPropertyChange(PropertyChangeEvent event) {
Object[] l = partListeners.getListeners();
for (int i = 0; i < l.length; i++) {
((IPropertyChangeListener)l[i]).propertyChange(event);
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.util.IPropertyChangeListener#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
*/
public void propertyChange(PropertyChangeEvent event) {
firePartPropertyChange(event);
}
/* (non-Javadoc)
* @see org.eclipse.ui.internal.LayoutPart#computePreferredSize(boolean, int, int, int)
*/
public int computePreferredSize(boolean width, int availableParallel,
int availablePerpendicular, int preferredParallel) {
return ((WorkbenchPartReference)partReference).computePreferredSize(width,
availableParallel, availablePerpendicular, preferredParallel);
}
/* (non-Javadoc)
* @see org.eclipse.ui.internal.LayoutPart#getSizeFlags(boolean)
*/
public int getSizeFlags(boolean horizontal) {
return ((WorkbenchPartReference)partReference).getSizeFlags(horizontal);
}
}