/*******************************************************************************
* Copyright 2011 Google Inc. All Rights Reserved.
*
* 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
package com.google.gdt.eclipse.designer.actions;
import com.google.gdt.eclipse.designer.util.ModuleDescription;
import com.google.gdt.eclipse.designer.util.Utils;
import org.eclipse.wb.core.branding.BrandingUtils;
import org.eclipse.wb.internal.core.DesignerPlugin;
import org.eclipse.wb.internal.core.utils.exception.DesignerExceptionUtils;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
import org.apache.commons.lang.StringUtils;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
/**
* Action to perform some operation with selected GWT module.
*
* @author scheglov_ke
* @coverage gwt.actions
*/
public abstract class AbstractModuleAction extends Action implements IWorkbenchWindowActionDelegate {
protected ModuleDescription m_selectedModule;
////////////////////////////////////////////////////////////////////////////
//
// IWorkbenchWindowActionDelegate
//
////////////////////////////////////////////////////////////////////////////
public void init(IWorkbenchWindow window) {
}
public void dispose() {
}
public void selectionChanged(IAction action, ISelection selection) {
try {
m_selectedModule = getSelectedModule(selection);
} catch (Throwable e) {
}
selectedModuleChanged(action);
}
public void run(IAction action) {
if (m_selectedModule != null) {
try {
runWithSelectedModule();
} catch (Throwable e) {
showException(e);
}
}
}
////////////////////////////////////////////////////////////////////////////
//
// Implementation
//
////////////////////////////////////////////////////////////////////////////
protected abstract void selectedModuleChanged(IAction action);
protected abstract void runWithSelectedModule() throws Exception;
////////////////////////////////////////////////////////////////////////////
//
// Selection utils
//
////////////////////////////////////////////////////////////////////////////
/**
* Finds module corresponding given {@link ISelection}.
*/
public static ModuleDescription getSelectedModule(ISelection selection) throws Exception {
if (selection instanceof IStructuredSelection) {
IStructuredSelection structuredSelection = (IStructuredSelection) selection;
Object selectedObject = structuredSelection.getFirstElement();
if (selectedObject instanceof IResource) {
return getModuleFromResource(selectedObject);
}
if (selectedObject instanceof IAdaptable) {
Object resource = ((IAdaptable) selectedObject).getAdapter(IResource.class);
return getModuleFromResource(resource);
}
} else if (selection instanceof ITextSelection) {
IEditorPart activeEditor = DesignerPlugin.getActiveEditor();
if (activeEditor != null) {
IEditorInput editorInput = activeEditor.getEditorInput();
if (editorInput instanceof IFileEditorInput) {
IFileEditorInput fileEditorInput = (IFileEditorInput) editorInput;
return getModuleFromResource(fileEditorInput.getFile());
}
}
}
return null;
}
/**
* If given object is {@link IResource} instance, finds module corresponding this resource.
*/
private static ModuleDescription getModuleFromResource(Object o) throws Exception {
if (o instanceof IResource) {
IResource resource = (IResource) o;
return Utils.getSingleModule(resource);
}
return null;
}
////////////////////////////////////////////////////////////////////////////
//
// UI utils
//
////////////////////////////////////////////////////////////////////////////
/**
* Shows the {@link Throwable} to user.
*/
public static void showException(final Throwable exception) {
// log
DesignerPlugin.log(exception);
// show
{
final Throwable rootCause = DesignerExceptionUtils.getDesignerCause(exception);
final Status status =
new Status(IStatus.ERROR,
DesignerPlugin.getDefault().toString(),
IStatus.ERROR,
"Parse error or internal Designer error.",
rootCause);
ErrorDialog dialog =
new ErrorDialog(
DesignerPlugin.getShell(),
"Exception happened",
"Designer error occurred.\nSelect Details>> for more information.\nSee the Error Log for more information.",
status, IStatus.ERROR) {
private Clipboard clipboard;
@Override
protected org.eclipse.swt.widgets.List createDropDownList(Composite parent) {
final org.eclipse.swt.widgets.List list = super.createDropDownList(parent);
list.removeAll();
// populate list using custom PrintWriter
list.add("Plug-in Provider: Google");
list.add("Plug-in Name: " + BrandingUtils.getBranding().getProductName());
list.add("Plug-in ID: org.eclipse");
//list.add("Plug-in Version: " + String.valueOf(product.getVersion()));
list.add("");
final PrintWriter printWriter = new PrintWriter(new Writer() {
@Override
public void write(char[] cbuf, int off, int len) throws IOException {
if (len != 2 && !(cbuf[0] == '\r' || cbuf[0] == '\n')) {
list.add(StringUtils.replace(new String(cbuf, off, len), "\t", " "));
}
}
@Override
public void flush() throws IOException {
}
@Override
public void close() throws IOException {
}
});
if (rootCause != null) {
rootCause.printStackTrace(printWriter);
list.add("");
list.add("Full stack trace (to see full context):");
}
exception.printStackTrace(printWriter);
// print config
list.add("");
// install own context menu
Menu menu = list.getMenu();
menu.dispose();
Menu copyMenu = new Menu(list);
MenuItem copyItem = new MenuItem(copyMenu, SWT.NONE);
copyItem.setText(JFaceResources.getString("copy")); //$NON-NLS-1$
copyItem.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
copyList(list);
}
public void widgetDefaultSelected(SelectionEvent e) {
copyList(list);
}
});
list.setMenu(copyMenu);
return list;
}
private void copyList(org.eclipse.swt.widgets.List list) {
if (clipboard != null) {
clipboard.dispose();
}
StringBuffer statusBuffer = new StringBuffer();
for (int i = 0; i < list.getItemCount(); ++i) {
statusBuffer.append(list.getItem(i));
statusBuffer.append("\r\n");
}
clipboard = new Clipboard(list.getDisplay());
clipboard.setContents(
new Object[]{statusBuffer.toString()},
new Transfer[]{TextTransfer.getInstance()});
}
@Override
public boolean close() {
if (clipboard != null) {
clipboard.dispose();
}
return super.close();
}
};
dialog.open();
}
}
}