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/*******************************************************************************
* Copyright (c) 2008, 2015 Wind River Systems, Inc. and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.dsf.debug.internal.ui.disassembly.actions;
import org.eclipse.cdt.dsf.debug.internal.ui.disassembly.provisional.IDisassemblyPart;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.text.source.IVerticalRulerInfo;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.ui.IEditorActionDelegate;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.actions.ActionDelegate;
import org.eclipse.ui.texteditor.IUpdate;
/**
* This class serves as an adapter for actions contributed to the vertical ruler's
* context menu. This adapter provides the contributed actions access to their disassembly part
* and the disassembly part's vertical ruler. These actions gain only limited access to the vertical
* ruler as defined by <code>IVerticalRulerInfo</code>. The adapter updates the
* adapter (inner) action on menu and mouse action on the vertical ruler.<p>
* Extending classes must implement the factory method
* <code>createAction(IDisassemblyPart, IVerticalRulerInfo)</code>.
*
* @see org.eclipse.ui.texteditor.AbstractRulerActionDelegate
*/
public abstract class AbstractDisassemblyRulerActionDelegate extends ActionDelegate implements IEditorActionDelegate, IViewActionDelegate, MouseListener, IMenuListener {
/** The disassembly part. */
private IDisassemblyPart fDisassemblyPart;
/** The action calling the action delegate. */
private IAction fCallerAction;
/** The underlying action. */
private IAction fAction;
/**
* The factory method creating the underlying action.
*
* @param disassemblyPart the disassembly part the action to be created will work on
* @param rulerInfo the vertical ruler the action to be created will work on
* @return the created action
*/
protected abstract IAction createAction(IDisassemblyPart disassemblyPart, IVerticalRulerInfo rulerInfo);
/*
* @see IEditorActionDelegate#setActiveEditor(org.eclipse.jface.action.IAction, org.eclipse.ui.IEditorPart)
*/
@Override
public void setActiveEditor(IAction callerAction, IEditorPart targetEditor) {
setTargetPart(callerAction, targetEditor);
}
/*
* @see org.eclipse.ui.IViewActionDelegate#init(org.eclipse.ui.IViewPart)
*/
@Override
public void init(IViewPart view) {
setTargetPart(fCallerAction, view);
}
@Override
public void init(IAction action) {
fCallerAction= action;
}
private void setTargetPart(IAction callerAction, IWorkbenchPart targetPart) {
if (fDisassemblyPart != null) {
IVerticalRulerInfo rulerInfo= fDisassemblyPart.getAdapter(IVerticalRulerInfo.class);
if (rulerInfo != null) {
Control control= rulerInfo.getControl();
if (control != null && !control.isDisposed())
control.removeMouseListener(this);
}
fDisassemblyPart.removeRulerContextMenuListener(this);
}
fDisassemblyPart= targetPart == null ? null : targetPart.getAdapter(IDisassemblyPart.class);
fCallerAction= callerAction;
fAction= null;
if (fDisassemblyPart != null) {
fDisassemblyPart.addRulerContextMenuListener(this);
IVerticalRulerInfo rulerInfo= fDisassemblyPart.getAdapter(IVerticalRulerInfo.class);
if (rulerInfo != null) {
fAction= createAction(fDisassemblyPart, rulerInfo);
update();
Control control= rulerInfo.getControl();
if (control != null && !control.isDisposed())
control.addMouseListener(this);
}
}
}
@Override
public void run(IAction callerAction) {
if (fAction != null)
fAction.run();
}
@Override
public void runWithEvent(IAction action, Event event) {
if (fAction != null)
fAction.runWithEvent(event);
}
@Override
public void selectionChanged(IAction action, ISelection selection) {
/*
* This is a ruler action - don't update on selection.
*/
}
/**
* Updates to the current state.
*/
private void update() {
if (fAction instanceof IUpdate) {
((IUpdate) fAction).update();
if (fCallerAction != null) {
fCallerAction.setText(fAction.getText());
fCallerAction.setEnabled(fAction.isEnabled());
}
}
}
/*
* @see IMenuListener#menuAboutToShow(org.eclipse.jface.action.IMenuManager)
*/
@Override
public void menuAboutToShow(IMenuManager manager) {
update();
}
/*
* @see MouseListener#mouseDoubleClick(org.eclipse.swt.events.MouseEvent)
*/
@Override
public void mouseDoubleClick(MouseEvent e) {
}
/*
* @see MouseListener#mouseDown(org.eclipse.swt.events.MouseEvent)
*/
@Override
public void mouseDown(MouseEvent e) {
update();
}
/*
* @see MouseListener#mouseUp(org.eclipse.swt.events.MouseEvent)
*/
@Override
public void mouseUp(MouseEvent e) {
}
}
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