org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/expression/ExpressionView.java

/*******************************************************************************
 * Copyright (c) 2000, 2006 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.internal.ui.views.expression;

 
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.internal.ui.IDebugHelpContextIds;
import org.eclipse.debug.internal.ui.preferences.IDebugPreferenceConstants;
import org.eclipse.debug.internal.ui.views.variables.AvailableLogicalStructuresAction;
import org.eclipse.debug.internal.ui.views.variables.VariablesView;
import org.eclipse.debug.internal.ui.views.variables.VariablesViewMessages;
import org.eclipse.debug.internal.ui.views.variables.details.AvailableDetailPanesAction;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.SWT;
import org.eclipse.ui.IWorkbenchActionConstants;
 
/**
 * Displays expressions and their values with a detail
 * pane.
 */
public class ExpressionView extends VariablesView {
	
	/**
	 * @see AbstractDebugView#getHelpContextId()
	 */
	protected String getHelpContextId() {
		return IDebugHelpContextIds.EXPRESSION_VIEW;		
	}	
	
	/**
	 * Initializes the viewer input on creation
	 */
	protected void setInitialContent() {
		getViewer().setInput(DebugPlugin.getDefault().getExpressionManager());
	}	
	
	/**
	 * Configures the toolBar.
	 * 
	 * @param tbm The toolbar that will be configured
	 */
	protected void configureToolBar(IToolBarManager tbm) {
		super.configureToolBar(tbm);
		tbm.add(new Separator(IDebugUIConstants.EMPTY_EXPRESSION_GROUP));		
		tbm.add(new Separator(IDebugUIConstants.EXPRESSION_GROUP));
	}	
	
   /**
	* Adds items to the tree viewer's context menu including any extension defined
	* actions.
	* 
	* @param menu The menu to add the item to.
	*/
	protected void fillContextMenu(IMenuManager menu) {

		menu.add(new Separator(IDebugUIConstants.EMPTY_EXPRESSION_GROUP));
		menu.add(new Separator(IDebugUIConstants.EXPRESSION_GROUP));
		menu.add(getAction(VARIABLES_FIND_ELEMENT_ACTION));
		menu.add(getAction("ChangeVariableValue")); //$NON-NLS-1$
		menu.add(new Separator());
		IAction action = new AvailableLogicalStructuresAction(this);
        if (action.isEnabled()) {
            menu.add(action);
        }
		action = new AvailableDetailPanesAction(this);
		if (isDetailPaneVisible() && action.isEnabled()) {
			menu.add(action);
		}
		menu.add(new Separator(IDebugUIConstants.EMPTY_RENDER_GROUP));
		menu.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
	}

	protected void contextActivated(ISelection selection) {
		if (!isVisible()) {
			return;
		}
		// update actions
		updateAction("ContentAssist"); //$NON-NLS-1$
		updateAction(VARIABLES_FIND_ELEMENT_ACTION);
		updateAction(FIND_ACTION);
	}

	/* (non-Javadoc)
	 * @see org.eclipse.debug.internal.ui.views.variables.VariablesView#getDetailPanePreferenceKey()
	 */
	protected String getDetailPanePreferenceKey() {
		return IDebugPreferenceConstants.EXPRESSIONS_DETAIL_PANE_ORIENTATION;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.debug.internal.ui.views.variables.VariablesView#getToggleActionLabel()
	 */
	protected String getToggleActionLabel() {
		return VariablesViewMessages.ExpressionView_4; 
	}

	/* (non-Javadoc)
	 * @see org.eclipse.debug.internal.ui.views.variables.VariablesView#becomesVisible()
	 */
	protected void becomesVisible() {
		setInitialContent();
		super.becomesVisible();
	}
    
	/* (non-Javadoc)
	 * @see org.eclipse.debug.internal.ui.views.variables.VariablesView#getViewerStyle()
	 */
	protected int getViewerStyle() {
		return SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL | SWT.VIRTUAL;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.debug.internal.ui.views.variables.VariablesView#getPresentationContextId()
	 */
	protected String getPresentationContextId() {
		return IDebugUIConstants.ID_EXPRESSION_VIEW;
	}	
    
	
}