/*******************************************************************************
* Copyright (c) 2005, 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
*******************************************************************************/
package org.eclipse.debug.ui;
import com.ibm.icu.text.MessageFormat;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.views.DebugUIViewsMessages;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.PopupDialog;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.IHandlerActivation;
import org.eclipse.ui.handlers.IHandlerService;
import org.eclipse.ui.keys.IBindingService;
/**
* A <code>PopupDialog</code> that is automatically positioned relative
* to a specified anchor point. The popup can be dismissed in the same
* manor as all popup dialogs, but additionally allows clients the option
* of specifying a command id that can be used to persist the contents of
* the dialog.
* <p>
* Clients may subclass this.
* @since 3.2
*/
public abstract class DebugPopup extends PopupDialog {
private Point fAnchor;
private IHandlerActivation fActivation;
private IHandlerService fHandlerService;
private String fCommandId;
private boolean fPersisted = false;
/**
* Constructs a new popup dialog of type <code>PopupDialog.INFOPOPUPRESIZE_SHELLSTYLE</code>
* @param parent The parent shell
* @param anchor point at which to anchor the popup dialog in Display coordinate space.
* Since 3.3, <code>null</code> can be specified to use a default anchor point
* @param commandId The command id to be used for persistence of
* the dialog, or <code>null</code>
*/
public DebugPopup(Shell parent, Point anchor, String commandId) {
super(parent, PopupDialog.INFOPOPUPRESIZE_SHELLSTYLE, true, true, true, false, null, null);
fAnchor = anchor;
fCommandId = commandId;
}
/**
* Returns the text to be shown in the popups's information area.
* May return <code>null</code>.
* <p>
* By default, if this dialog has a persistence command associated with it,
* the text displayed is of the form "Press {key-sequence} to {action}". The
* action text is specified by the method <code>getActionText()</code>.
* </p>
* @return The text to be shown in the popup's information area or <code>null</code>
*/
protected String getInfoText() {
if (getCommandId() != null && getActionText() != null) {
IWorkbench workbench = PlatformUI.getWorkbench();
IBindingService bindingService = (IBindingService) workbench.getAdapter(IBindingService.class);
String formattedBinding = bindingService.getBestActiveBindingFormattedFor(getCommandId());
String infoText = null;
if (formattedBinding != null) {
infoText = MessageFormat.format(DebugUIViewsMessages.InspectPopupDialog_1, new String[] { formattedBinding, getActionText()});
}
return infoText;
}
return null;
}
/**
* Returns the text to be shown as the action performed when this dialog's
* persist command is invoked, or <code>null</code>.
* <p>
* Subclasses should override as necessary.
* </p>
* @return the text to be shown as the action performed when this dialog's
* persist command is invoked
*/
protected String getActionText() {
return null;
}
/**
* Returns the command id to be used for persisting the contents of the
* dialog. If the contents should not be persisted, this method should
* return null.
*
* @return The command id to be used for persisting the contents of the
* dialog or <code>null</code>
*/
protected String getCommandId() {
return fCommandId;
}
/**
* Persists the contents of the dialog. Subclasses should override as required,
* but also call super.persist().
*/
protected void persist() {
fPersisted = true;
}
/**
* Returns whether the command handler was invoked to persist this popup's result.
*
* @return whether the command handler was invoked to persist this popup's result
*/
protected boolean wasPersisted() {
return fPersisted;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.dialogs.PopupDialog#createDialogArea(org.eclipse.swt.widgets.Composite)
*/
protected abstract Control createDialogArea(Composite parent);
/**
* Returns the initial location to use for the shell based upon the
* current selection in the viewer. Bottom is preferred to top, and
* right is preferred to left, therefore if possible the popup will
* be located below and to the right of the selection.
*
* @param initialSize
* the initial size of the shell, as returned by
* <code>getInitialSize</code>.
* @return the initial location of the shell
*/
protected Point getInitialLocation(Point initialSize) {
if (fAnchor == null) {
return super.getInitialLocation(initialSize);
}
Point point = fAnchor;
Rectangle monitor = getShell().getMonitor().getClientArea();
if (monitor.width < point.x + initialSize.x) {
point.x = Math.max(0, point.x - initialSize.x);
}
if (monitor.height < point.y + initialSize.y) {
point.y = Math.max(0, point.y - initialSize.y);
}
return point;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.dialogs.PopupDialog#getDialogSettings()
*/
protected IDialogSettings getDialogSettings() {
IDialogSettings settings = DebugUIPlugin.getDefault().getDialogSettings();
return settings;
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.PopupDialog#open()
*/
public int open() {
IWorkbench workbench = PlatformUI.getWorkbench();
String commandId = getCommandId();
if (commandId != null) {
IHandler fCloseHandler = new AbstractHandler() {
public Object execute(ExecutionEvent event) throws ExecutionException {
persist();
close();
return null;
}
};
fHandlerService = (IHandlerService) workbench.getAdapter(IHandlerService.class);
fActivation = fHandlerService.activateHandler(commandId, fCloseHandler);
}
String infoText = getInfoText();
if (infoText != null)
setInfoText(infoText);
return super.open();
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.PopupDialog#close()
*/
public boolean close() {
if (fActivation != null)
fHandlerService.deactivateHandler(fActivation);
return super.close();
}
}
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