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/*******************************************************************************
* Copyright (c) 2006 Oracle Corporation.
* 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:
* Cameron Bateman/Oracle - initial API and implementation
*
********************************************************************************/
package org.eclipse.jst.jsf.designtime.internal.jsp;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jst.jsf.common.internal.JSPUtil;
import org.eclipse.jst.jsf.core.internal.JSFCorePlugin;
import org.eclipse.jst.jsf.core.jsfappconfig.JSFAppConfigUtils;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IPartListener2;
import org.eclipse.ui.IStartup;
import org.eclipse.ui.IWindowListener;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPartReference;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
/**
* On workbench startup, registers a part listener that triggers when
* a JSP editor opens.
*
* @author cbateman
*
*/
public class StartupHandler implements IStartup
{
private final JSPEditorListener _partListener = new JSPEditorListener();
public void earlyStartup()
{
PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable()
{
public void run()
{
IWorkbenchWindow windows[] =
PlatformUI.getWorkbench().getWorkbenchWindows();
for (int i = 0; i < windows.length; i++)
{
IWorkbenchPage pages[] = windows[i].getPages();
for (int j = 0; j < pages.length; j++)
{
IEditorReference[] editorReferences =
pages[j].getEditorReferences();
for (int k = 0; k < editorReferences.length; k++)
{
if (_partListener.isValidJSPEditor(editorReferences[k]))
{
_partListener.setJSPModelListener(editorReferences[k]);
}
}
}
windows[i].getPartService().addPartListener(_partListener);
}
// TODO: register with all windows?
PlatformUI.getWorkbench().addWindowListener(new IWindowListener()
{
public void windowActivated(IWorkbenchWindow window) {
// do nothing
}
public void windowDeactivated(IWorkbenchWindow window) {
// do nothing
}
public void windowClosed(IWorkbenchWindow window) {
window.getPartService().removePartListener(_partListener);
}
public void windowOpened(IWorkbenchWindow window) {
window.getPartService().addPartListener(_partListener);
}
});
}
});
}
private static class JSPEditorListener implements IPartListener2
{
private JSPModelProcessor _processor;
public void partActivated(IWorkbenchPartReference partRef) {
// do nothing
}
public void partBroughtToTop(IWorkbenchPartReference partRef) {
// do nothing
}
public void partClosed(IWorkbenchPartReference partRef) {
if (partRef instanceof IEditorReference)
{
releaseJSPModelListener((IEditorReference) partRef);
}
}
public void partDeactivated(IWorkbenchPartReference partRef) {
// do nothing
}
public void partOpened(IWorkbenchPartReference partRef) {
if (isValidJSPEditor(partRef))
{
setJSPModelListener((IEditorReference)partRef);
}
}
public void partHidden(IWorkbenchPartReference partRef) {
// do nothing
}
public void partVisible(IWorkbenchPartReference partRef) {
// do nothing
}
public void partInputChanged(IWorkbenchPartReference partRef) {
// do nothing
}
private boolean isJSPEditor(IEditorReference editorRef)
{
IFile file = getIFile(editorRef);
if (file != null)
{
return JSPUtil.isJSPContentType(file);
}
return false;
}
/**
* @param editorRef
* @return true if the editor is editing the JSP content type and
* the owning project is a JSF project
*/
boolean isValidJSPEditor(IEditorReference editorRef)
{
final IFile file = getIFile(editorRef);
return file != null &&
JSFAppConfigUtils.isValidJSFProject(file.getProject()) &&
isJSPEditor(editorRef);
}
boolean isValidJSPEditor(IWorkbenchPartReference partRef)
{
if (partRef instanceof IEditorReference)
{
return isValidJSPEditor((IEditorReference)partRef);
}
return false;
}
void setJSPModelListener(IEditorReference editorRef)
{
IFile file = getIFile(editorRef);
if (file != null)
{
try
{
// implicitly creates if not present
_processor = JSPModelProcessor.get(file);
_processor.refresh(false);
}
catch (Exception e)
{
JSFCorePlugin.getDefault().getLog().log(new Status(IStatus.ERROR, JSFCorePlugin.PLUGIN_ID, 0, "Error acquiring model processor",e)); //$NON-NLS-1$
}
}
}
void releaseJSPModelListener(IEditorReference editorRef)
{
IFile file = getIFile(editorRef);
if (file != null)
{
JSPModelProcessor.dispose(file);
}
}
IFile getIFile(IEditorReference editorRef)
{
try
{
IEditorInput editorInput = editorRef.getEditorInput();
Object adapt = editorInput.getAdapter(IFile.class);
if (adapt instanceof IFile)
{
return (IFile) adapt;
}
}
catch (PartInitException excp)
{
JSFCorePlugin.getDefault().getLog().log(new Status(IStatus.ERROR, JSFCorePlugin.PLUGIN_ID, 0, "Error acquiring editor input",excp)); //$NON-NLS-1$
}
return null;
}
}
}
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