org.eclipse.edt.ide.ui.internal.packageexplorer.OpenActionProvider.java Source code

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Here is the source code for org.eclipse.edt.ide.ui.internal.packageexplorer.OpenActionProvider.java

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/*******************************************************************************
 * Copyright  2008, 2013 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.edt.ide.ui.internal.packageexplorer;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.edt.ide.core.model.IClassFile;
import org.eclipse.edt.ide.core.model.IEGLElement;
import org.eclipse.edt.ide.core.model.IEGLFile;
import org.eclipse.edt.ide.ui.internal.UINlsStrings;
import org.eclipse.edt.ide.ui.internal.actions.OpenIRFileAction;
import org.eclipse.jdt.ui.actions.IJavaEditorActionDefinitionIds;
import org.eclipse.jface.action.GroupMarker;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.actions.OpenFileAction;
import org.eclipse.ui.actions.OpenWithMenu;
import org.eclipse.ui.navigator.CommonActionProvider;
import org.eclipse.ui.navigator.ICommonActionConstants;
import org.eclipse.ui.navigator.ICommonActionExtensionSite;
import org.eclipse.ui.navigator.ICommonMenuConstants;
import org.eclipse.ui.navigator.ICommonViewerWorkbenchSite;

public class OpenActionProvider extends CommonActionProvider {

    private OpenFileAction openFileAction;
    private OpenIRFileAction openIRFileAction;

    private ICommonViewerWorkbenchSite viewSite = null;

    private boolean contribute = false;

    public void init(ICommonActionExtensionSite aConfig) {
        if (aConfig.getViewSite() instanceof ICommonViewerWorkbenchSite) {
            viewSite = (ICommonViewerWorkbenchSite) aConfig.getViewSite();
            openFileAction = new OpenFileAction(viewSite.getPage());
            openIRFileAction = new OpenIRFileAction(viewSite.getPage());
            openFileAction.setActionDefinitionId(IJavaEditorActionDefinitionIds.OPEN_EDITOR); //so F3 will show
            contribute = true;
        }
    }

    public void fillContextMenu(IMenuManager menu) {
        if (!contribute || getContext().getSelection().isEmpty()) {
            return;
        }
        IStructuredSelection selection = (IStructuredSelection) getContext().getSelection();

        if (selection.size() == 1) {
            Object selObj = selection.getFirstElement();
            if (selObj instanceof IClassFile) {
                openIRFileAction.setClassFile((IClassFile) selObj);
                menu.insertAfter(ICommonMenuConstants.GROUP_OPEN, openIRFileAction);
            }
        } else {
            openFileAction.selectionChanged(selection);
            if (openFileAction.isEnabled())
                menu.insertAfter(ICommonMenuConstants.GROUP_OPEN, openFileAction);
        }
        addOpenWithMenu(selection, menu);
    }

    private void addOpenWithMenu(IStructuredSelection ss, IMenuManager menu) {
        if (ss.isEmpty())
            return;
        if (ss.size() != 1)
            return;

        Object o = ss.getFirstElement();
        if (!(o instanceof IEGLFile))
            return;

        IEGLFile element = (IEGLFile) o;
        IResource resource = element.getResource();
        if (!(resource instanceof IFile))
            return;

        // Create a menu.
        IMenuManager submenu = new MenuManager(UINlsStrings.EGLOpenActionProvider_OpenWith,
                ICommonMenuConstants.GROUP_OPEN_WITH);
        submenu.add(new GroupMarker(ICommonMenuConstants.GROUP_TOP));
        submenu.add(new OpenWithMenu(viewSite.getPage(), (IFile) resource));
        submenu.add(new GroupMarker(ICommonMenuConstants.GROUP_ADDITIONS));
        // Add the submenu.
        menu.appendToGroup(ICommonMenuConstants.GROUP_OPEN_WITH, submenu);
    }

    public void fillActionBars(IActionBars theActionBars) {
        if (!contribute) {
            return;
        }
        IStructuredSelection selection = (IStructuredSelection) getContext().getSelection();
        if (selectionChangedToEGL(selection)) {
            if (selection.getFirstElement() instanceof IClassFile) {
                theActionBars.setGlobalActionHandler(ICommonActionConstants.OPEN, openIRFileAction);
            } else {
                theActionBars.setGlobalActionHandler(ICommonActionConstants.OPEN, openFileAction);
            }
        }
    }

    private boolean selectionChangedToEGL(IStructuredSelection selection) {
        if (selection.size() == 1) {
            if (selection.getFirstElement() instanceof IEGLFile) {
                IEGLElement eglElem = (IEGLElement) selection.getFirstElement();
                IResource resource = eglElem.getResource();
                if (resource != null) {
                    openFileAction.selectionChanged(new StructuredSelection(resource));
                    return true;
                }
            } else if (selection.getFirstElement() instanceof IClassFile) {
                IEGLElement eglElem = (IEGLElement) selection.getFirstElement();
                openIRFileAction.setClassFile(((IClassFile) eglElem));
                return true;
            }

        }
        return false;
    }

}