core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/EditTemplateDialog.java - cdt/org.eclipse.cdt - Git at Google

 package org.eclipse.cdt.internal.ui.preferences;

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved.
  */

 import org.eclipse.cdt.internal.corext.template.ContextTypeRegistry;
 import org.eclipse.cdt.internal.corext.template.Template;
 import org.eclipse.cdt.internal.corext.template.TemplateMessages;
 import org.eclipse.cdt.internal.corext.template.TemplateTranslator;
 import org.eclipse.cdt.internal.ui.IContextMenuConstants;
 import org.eclipse.cdt.internal.ui.dialogs.StatusDialog;
 import org.eclipse.cdt.internal.ui.dialogs.StatusInfo;
 import org.eclipse.cdt.internal.ui.editor.CEditor;
 import org.eclipse.cdt.internal.ui.text.CSourceViewerConfiguration;
 import org.eclipse.cdt.internal.ui.text.CTextTools;
 import org.eclipse.cdt.internal.ui.text.contentassist.ContentAssistPreference;
 import org.eclipse.cdt.internal.ui.text.template.TemplateVariableProcessor;
 import org.eclipse.cdt.internal.ui.util.SWTUtil;
 import org.eclipse.cdt.ui.CUIPlugin;

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Vector;

 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.StyledText;
 import org.eclipse.swt.custom.VerifyKeyListener;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.KeyListener;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.events.VerifyEvent;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.graphics.RGB;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Combo;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Menu;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;

 import org.eclipse.core.runtime.CoreException;

 import org.eclipse.jface.action.Action;
 import org.eclipse.jface.action.GroupMarker;
 import org.eclipse.jface.action.IAction;
 import org.eclipse.jface.action.IMenuListener;
 import org.eclipse.jface.action.IMenuManager;
 import org.eclipse.jface.action.MenuManager;
 import org.eclipse.jface.action.Separator;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.PreferenceConverter;
 import org.eclipse.jface.resource.JFaceResources;
 import org.eclipse.jface.text.Document;
 import org.eclipse.jface.text.IDocument;
 import org.eclipse.jface.text.ITextListener;
 import org.eclipse.jface.text.ITextOperationTarget;
 import org.eclipse.jface.text.ITextViewer;
 import org.eclipse.jface.text.ITextViewerExtension;
 import org.eclipse.jface.text.TextEvent;
 import org.eclipse.jface.text.contentassist.ContentAssistant;
 import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
 import org.eclipse.jface.text.contentassist.IContentAssistant;
 import org.eclipse.jface.text.source.ISourceViewer;
 import org.eclipse.jface.text.source.SourceViewer;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.SelectionChangedEvent;

 import org.eclipse.ui.texteditor.ITextEditorActionConstants;
 import org.eclipse.ui.texteditor.IUpdate;


 /**
  * Dialog to edit a template.
  */
 public class EditTemplateDialog extends StatusDialog {

 	private static class SimpleCSourceViewerConfiguration extends CSourceViewerConfiguration {

 		private final IContentAssistProcessor fProcessor;

 		SimpleCSourceViewerConfiguration(CTextTools tools, CEditor editor, IContentAssistProcessor processor) {
 			super(tools, editor);
 			fProcessor= processor;
 		}

 		/*
 		 * @see SourceViewerConfiguration#getContentAssistant(ISourceViewer)
 		 */
 		public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {

 			IPreferenceStore store= CUIPlugin.getDefault().getPreferenceStore();

 			ContentAssistant assistant= new ContentAssistant();
 			assistant.setContentAssistProcessor(fProcessor, IDocument.DEFAULT_CONTENT_TYPE);

 			//assistant.enableAutoInsert(store.getBoolean(ContentAssistPreference.AUTOINSERT));
 			boolean enabled = (store.getBoolean(ContentAssistPreference.AUTOACTIVATION_TRIGGERS_DOT)
 							|| store.getBoolean(ContentAssistPreference.AUTOACTIVATION_TRIGGERS_ARROW)
 							|| store.getBoolean(ContentAssistPreference.AUTOACTIVATION_TRIGGERS_DOUBLECOLON)
 			);
 			assistant.enableAutoActivation(enabled);

 			assistant.setAutoActivationDelay(store.getInt(ContentAssistPreference.AUTOACTIVATION_DELAY));
 			assistant.setProposalPopupOrientation(IContentAssistant.PROPOSAL_OVERLAY);
 			assistant.setContextInformationPopupOrientation(IContentAssistant.CONTEXT_INFO_ABOVE);
 			//assistant.setInformationControlCreator(getInformationControlCreator(sourceViewer));

 			Display display= sourceViewer.getTextWidget().getDisplay();

 			Color background= createColor(store, ContentAssistPreference.PROPOSALS_BACKGROUND, display);
 			assistant.setContextInformationPopupBackground(background);
 			assistant.setContextSelectorBackground(background);
 			assistant.setProposalSelectorBackground(background);

 			Color foreground= createColor(store, ContentAssistPreference.PROPOSALS_FOREGROUND, display);
 			assistant.setContextInformationPopupForeground(foreground);
 			assistant.setContextSelectorForeground(foreground);
 			assistant.setProposalSelectorForeground(foreground);

 			return assistant;
 		}

 		/**
 		 * Creates a color from the information stored in the given preference store.
 		 * Returns <code>null</code> if there is no such information available.
 		 */
 		private Color createColor(IPreferenceStore store, String key, Display display) {

 			RGB rgb= null;

 			if (store.contains(key)) {

 				if (store.isDefault(key))
 					rgb= PreferenceConverter.getDefaultColor(store, key);
 				else
 					rgb= PreferenceConverter.getColor(store, key);

 				if (rgb != null)
 					return new Color(display, rgb);
 			}

 			return null;
 		}
 	}

 	private static class TextViewerAction extends Action implements IUpdate {

 		private int fOperationCode= -1;
 		private ITextOperationTarget fOperationTarget;

 		public TextViewerAction(ITextViewer viewer, int operationCode) {
 			fOperationCode= operationCode;
 			fOperationTarget= viewer.getTextOperationTarget();
 			update();
 		}

 		/**
 		 * Updates the enabled state of the action.
 		 * Fires a property change if the enabled state changes.
 		 *
 		 * @see Action#firePropertyChange(String, Object, Object)
 		 */
 		public void update() {

 			boolean wasEnabled= isEnabled();
 			boolean isEnabled= (fOperationTarget != null && fOperationTarget.canDoOperation(fOperationCode));
 			setEnabled(isEnabled);

 			if (wasEnabled != isEnabled) {
 				firePropertyChange(ENABLED, wasEnabled ? Boolean.TRUE : Boolean.FALSE, isEnabled ? Boolean.TRUE : Boolean.FALSE);
 			}
 		}

 		/**
 		 * @see Action#run()
 		 */
 		public void run() {
 			if (fOperationCode != -1 && fOperationTarget != null) {
 				fOperationTarget.doOperation(fOperationCode);
 			}
 		}
 	}

 	private final Template fTemplate;

 	protected Text fNameText;
 	private Text fDescriptionText;
 	protected Combo fContextCombo;
 	protected SourceViewer fPatternEditor;
 	private Button fInsertVariableButton;

 	protected TemplateTranslator fTranslator= new TemplateTranslator();
 	protected boolean fSuppressError= true; // #4354
 	private Map fGlobalActions= new HashMap(10);
 	private List fSelectionActions = new ArrayList(3);
 	private Vector fContextTypes= new Vector();

 	protected final TemplateVariableProcessor fProcessor= new TemplateVariableProcessor();

 	public EditTemplateDialog(Shell parent, Template template, boolean edit) {
 		super(parent);

 		setShellStyle(getShellStyle() | SWT.MAX | SWT.RESIZE);

 		String title= edit
 			? TemplateMessages.getString("EditTemplateDialog.title.edit") //$NON-NLS-1$
 			: TemplateMessages.getString("EditTemplateDialog.title.new"); //$NON-NLS-1$
 		setTitle(title);

 		fTemplate= template;

 		ContextTypeRegistry registry= ContextTypeRegistry.getInstance();
 		for (Iterator iterator= registry.iterator(); iterator.hasNext(); )
 			fContextTypes.add(iterator.next());

 		if (fContextTypes.size() > 0)
 			fProcessor.setContextType(ContextTypeRegistry.getInstance().getContextType((String) fContextTypes.get(0)));
 	}

 	/*
 	 * @see Dialog#createDialogArea(Composite)
 	 */
 	protected Control createDialogArea(Composite ancestor) {
 		Composite parent= new Composite(ancestor, SWT.NONE);
 		GridLayout layout= new GridLayout();
 		layout.numColumns= 2;
 		parent.setLayout(layout);
 		parent.setLayoutData(new GridData(GridData.FILL_BOTH));

 		createLabel(parent, TemplateMessages.getString("EditTemplateDialog.name")); //$NON-NLS-1$

 		Composite composite= new Composite(parent, SWT.NONE);
 		composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		layout= new GridLayout();
 		layout.numColumns= 3;
 		layout.marginWidth= 0;
 		layout.marginHeight= 0;
 		composite.setLayout(layout);

 		fNameText= createText(composite);
 		fNameText.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				if (fSuppressError && (fNameText.getText().trim().length() != 0))
 					fSuppressError= false;

 				updateButtons();
 			}
 		});

 		createLabel(composite, TemplateMessages.getString("EditTemplateDialog.context")); //$NON-NLS-1$
 		fContextCombo= new Combo(composite, SWT.READ_ONLY);

 		for (Iterator iterator= fContextTypes.iterator(); iterator.hasNext(); )
 			fContextCombo.add((String) iterator.next());

 		fContextCombo.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				String name= fContextCombo.getText();
 				fProcessor.setContextType(ContextTypeRegistry.getInstance().getContextType(name));
 			}
 		});

 		createLabel(parent, TemplateMessages.getString("EditTemplateDialog.description")); //$NON-NLS-1$
 		fDescriptionText= createText(parent);

 		composite= new Composite(parent, SWT.NONE);
 		composite.setLayoutData(new GridData(GridData.FILL_VERTICAL));
 		layout= new GridLayout();
 		layout.marginWidth= 0;
 		layout.marginHeight= 0;
 		composite.setLayout(layout);

 		createLabel(composite, TemplateMessages.getString("EditTemplateDialog.pattern")); //$NON-NLS-1$
 		fPatternEditor= createEditor(parent);

 		Label filler= new Label(composite, SWT.NONE);
 		filler.setLayoutData(new GridData(GridData.FILL_VERTICAL));

 		fInsertVariableButton= new Button(composite, SWT.NONE);
 		fInsertVariableButton.setLayoutData(getButtonGridData(fInsertVariableButton));
 		fInsertVariableButton.setText(TemplateMessages.getString("EditTemplateDialog.insert.variable")); //$NON-NLS-1$
 		fInsertVariableButton.addSelectionListener(new SelectionListener() {
 			public void widgetSelected(SelectionEvent e) {
 				fPatternEditor.getTextWidget().setFocus();
 				fPatternEditor.doOperation(ISourceViewer.CONTENTASSIST_PROPOSALS);
 			}

 			public void widgetDefaultSelected(SelectionEvent e) {}
 		});

 		fNameText.setText(fTemplate.getName());
 		fDescriptionText.setText(fTemplate.getDescription());
 		fContextCombo.select(getIndex(fTemplate.getContextTypeName()));

 		initializeActions();

 		return composite;
 	}

 	private static GridData getButtonGridData(Button button) {
 		GridData data= new GridData(GridData.FILL_HORIZONTAL);
 		data.heightHint= SWTUtil.getButtonHeigthHint(button);

 		return data;
 	}

 	private static Label createLabel(Composite parent, String name) {
 		Label label= new Label(parent, SWT.NULL);
 		label.setText(name);
 		label.setLayoutData(new GridData());

 		return label;
 	}

 	private static Text createText(Composite parent) {
 		Text text= new Text(parent, SWT.BORDER);
 		text.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		return text;
 	}

 	private SourceViewer createEditor(Composite parent) {
 		SourceViewer viewer= new SourceViewer(parent, null, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
 		CTextTools tools= CUIPlugin.getDefault().getTextTools();
 		viewer.configure(new SimpleCSourceViewerConfiguration(tools, null, fProcessor));
 		viewer.setEditable(true);
 		viewer.setDocument(new Document(fTemplate.getPattern()));

 		Font font= JFaceResources.getFontRegistry().get(JFaceResources.TEXT_FONT);
 		viewer.getTextWidget().setFont(font);

 		Control control= viewer.getControl();
 		GridData data= new GridData(GridData.FILL_BOTH);
 		data.widthHint= convertWidthInCharsToPixels(60);
 		data.heightHint= convertHeightInCharsToPixels(5);
 		control.setLayoutData(data);

 		viewer.addTextListener(new ITextListener() {
 			public void textChanged(TextEvent event) {
 			    try {
 					fTranslator.translate(event.getDocumentEvent().getDocument().get());
 			    } catch (CoreException e) {
 			     	CUIPlugin.getDefault().log(e);
 			     	// XXX dialog
 			    }

 				updateUndoAction();
 				updateButtons();
 			}
 		});

 		viewer.addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent event) {
 				updateSelectionDependentActions();
 			}
 		});

 		if (viewer instanceof ITextViewerExtension) {
 			 ((ITextViewerExtension) viewer).prependVerifyKeyListener(new VerifyKeyListener() {
 				public void verifyKey(VerifyEvent event) {
 					handleVerifyKeyPressed(event);
 				}
 			});
 		} else {
 			viewer.getTextWidget().addKeyListener(new KeyListener() {
 				public void keyPressed(KeyEvent e) {
 					handleKeyPressed(e);
 				}

 				public void keyReleased(KeyEvent e) {}
 			});
 		}

 		return viewer;
 	}

 	protected void handleKeyPressed(KeyEvent event) {
 		if (event.stateMask != SWT.CTRL)
 			return;

 		switch (event.character) {
 			case ' ':
 				fPatternEditor.doOperation(ISourceViewer.CONTENTASSIST_PROPOSALS);
 				break;

 			// CTRL-Z
 			case (int) 'z' - (int) 'a' + 1:
 				fPatternEditor.doOperation(ITextOperationTarget.UNDO);
 				break;
 		}
 	}

 	protected void handleVerifyKeyPressed(VerifyEvent event) {
 		if (!event.doit)
 			return;

 		if (event.stateMask != SWT.CTRL)
 			return;

 		switch (event.character) {
 			case ' ':
 				fPatternEditor.doOperation(ISourceViewer.CONTENTASSIST_PROPOSALS);
 				event.doit= false;
 				break;

 			// CTRL-Z
 			case (int) 'z' - (int) 'a' + 1:
 				fPatternEditor.doOperation(ITextOperationTarget.UNDO);
 				event.doit= false;
 				break;
 		}
 	}

 	private void initializeActions() {
 		TextViewerAction action= new TextViewerAction(fPatternEditor, ITextOperationTarget.UNDO);
 		action.setText(TemplateMessages.getString("EditTemplateDialog.undo")); //$NON-NLS-1$
 		fGlobalActions.put(ITextEditorActionConstants.UNDO, action);

 		action= new TextViewerAction(fPatternEditor, ITextOperationTarget.CUT);
 		action.setText(TemplateMessages.getString("EditTemplateDialog.cut")); //$NON-NLS-1$
 		fGlobalActions.put(ITextEditorActionConstants.CUT, action);

 		action= new TextViewerAction(fPatternEditor, ITextOperationTarget.COPY);
 		action.setText(TemplateMessages.getString("EditTemplateDialog.copy")); //$NON-NLS-1$
 		fGlobalActions.put(ITextEditorActionConstants.COPY, action);

 		action= new TextViewerAction(fPatternEditor, ITextOperationTarget.PASTE);
 		action.setText(TemplateMessages.getString("EditTemplateDialog.paste")); //$NON-NLS-1$
 		fGlobalActions.put(ITextEditorActionConstants.PASTE, action);

 		action= new TextViewerAction(fPatternEditor, ITextOperationTarget.SELECT_ALL);
 		action.setText(TemplateMessages.getString("EditTemplateDialog.select.all")); //$NON-NLS-1$
 		fGlobalActions.put(ITextEditorActionConstants.SELECT_ALL, action);

 		action= new TextViewerAction(fPatternEditor, ISourceViewer.CONTENTASSIST_PROPOSALS);
 		action.setText(TemplateMessages.getString("EditTemplateDialog.content.assist")); //$NON-NLS-1$
 		fGlobalActions.put("ContentAssistProposal", action); //$NON-NLS-1$

 		fSelectionActions.add(ITextEditorActionConstants.CUT);
 		fSelectionActions.add(ITextEditorActionConstants.COPY);
 		fSelectionActions.add(ITextEditorActionConstants.PASTE);

 		// create context menu
 		MenuManager manager= new MenuManager(null, null);
 		manager.setRemoveAllWhenShown(true);
 		manager.addMenuListener(new IMenuListener() {
 			public void menuAboutToShow(IMenuManager mgr) {
 				fillContextMenu(mgr);
 			}
 		});

 		StyledText text= fPatternEditor.getTextWidget();
 		Menu menu= manager.createContextMenu(text);
 		text.setMenu(menu);
 	}

 	protected void fillContextMenu(IMenuManager menu) {
 		menu.add(new GroupMarker(ITextEditorActionConstants.GROUP_UNDO));
 		menu.appendToGroup(ITextEditorActionConstants.GROUP_UNDO, (IAction) fGlobalActions.get(ITextEditorActionConstants.UNDO));

 		menu.add(new Separator(ITextEditorActionConstants.GROUP_EDIT));
 		menu.appendToGroup(ITextEditorActionConstants.GROUP_EDIT, (IAction) fGlobalActions.get(ITextEditorActionConstants.CUT));
 		menu.appendToGroup(ITextEditorActionConstants.GROUP_EDIT, (IAction) fGlobalActions.get(ITextEditorActionConstants.COPY));
 		menu.appendToGroup(ITextEditorActionConstants.GROUP_EDIT, (IAction) fGlobalActions.get(ITextEditorActionConstants.PASTE));
 		menu.appendToGroup(ITextEditorActionConstants.GROUP_EDIT, (IAction) fGlobalActions.get(ITextEditorActionConstants.SELECT_ALL));

 		menu.add(new Separator(IContextMenuConstants.GROUP_GENERATE));
 		menu.appendToGroup(IContextMenuConstants.GROUP_GENERATE, (IAction) fGlobalActions.get("ContentAssistProposal")); //$NON-NLS-1$
 	}

 	protected void updateSelectionDependentActions() {
 		Iterator iterator= fSelectionActions.iterator();
 		while (iterator.hasNext())
 			updateAction((String)iterator.next());
 	}

 	protected void updateUndoAction() {
 		IAction action= (IAction) fGlobalActions.get(ITextEditorActionConstants.UNDO);
 		if (action instanceof IUpdate)
 			((IUpdate) action).update();
 	}

 	protected void updateAction(String actionId) {
 		IAction action= (IAction) fGlobalActions.get(actionId);
 		if (action instanceof IUpdate)
 			((IUpdate) action).update();
 	}

 	private int getIndex(String context) {
 		ContextTypeRegistry registry= ContextTypeRegistry.getInstance();
 		registry.getContextType(context);

 		if (context == null)
 			return -1;

 		return fContextTypes.indexOf(context);
 	}

 	protected void okPressed() {
 		fTemplate.setName(fNameText.getText());
 		fTemplate.setDescription(fDescriptionText.getText());
 		fTemplate.setContext(fContextCombo.getText());
 		fTemplate.setPattern(fPatternEditor.getTextWidget().getText());

 		super.okPressed();
 	}

 	protected void updateButtons() {
 		boolean valid= fNameText.getText().trim().length() != 0;

 		StatusInfo status= new StatusInfo();

 		if (!valid) {
 			if (fSuppressError)
 				status.setError(""); //$NON-NLS-1$
 			else
 				status.setError(TemplateMessages.getString("EditTemplateDialog.error.noname")); //$NON-NLS-1$
  		} else if (fTranslator.getErrorMessage() != null) {
  			status.setError(fTranslator.getErrorMessage());
 		}

 		updateStatus(status);
 	}

 }
	package org.eclipse.cdt.internal.ui.preferences;

	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved.
	*/

	import org.eclipse.cdt.internal.corext.template.ContextTypeRegistry;
	import org.eclipse.cdt.internal.corext.template.Template;
	import org.eclipse.cdt.internal.corext.template.TemplateMessages;
	import org.eclipse.cdt.internal.corext.template.TemplateTranslator;
	import org.eclipse.cdt.internal.ui.IContextMenuConstants;
	import org.eclipse.cdt.internal.ui.dialogs.StatusDialog;
	import org.eclipse.cdt.internal.ui.dialogs.StatusInfo;
	import org.eclipse.cdt.internal.ui.editor.CEditor;
	import org.eclipse.cdt.internal.ui.text.CSourceViewerConfiguration;
	import org.eclipse.cdt.internal.ui.text.CTextTools;
	import org.eclipse.cdt.internal.ui.text.contentassist.ContentAssistPreference;
	import org.eclipse.cdt.internal.ui.text.template.TemplateVariableProcessor;
	import org.eclipse.cdt.internal.ui.util.SWTUtil;
	import org.eclipse.cdt.ui.CUIPlugin;

	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;
	import java.util.Vector;

	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.StyledText;
	import org.eclipse.swt.custom.VerifyKeyListener;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.events.KeyListener;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.events.VerifyEvent;
	import org.eclipse.swt.graphics.Color;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.graphics.RGB;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Combo;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Menu;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Text;

	import org.eclipse.core.runtime.CoreException;

	import org.eclipse.jface.action.Action;
	import org.eclipse.jface.action.GroupMarker;
	import org.eclipse.jface.action.IAction;
	import org.eclipse.jface.action.IMenuListener;
	import org.eclipse.jface.action.IMenuManager;
	import org.eclipse.jface.action.MenuManager;
	import org.eclipse.jface.action.Separator;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.preference.PreferenceConverter;
	import org.eclipse.jface.resource.JFaceResources;
	import org.eclipse.jface.text.Document;
	import org.eclipse.jface.text.IDocument;
	import org.eclipse.jface.text.ITextListener;
	import org.eclipse.jface.text.ITextOperationTarget;
	import org.eclipse.jface.text.ITextViewer;
	import org.eclipse.jface.text.ITextViewerExtension;
	import org.eclipse.jface.text.TextEvent;
	import org.eclipse.jface.text.contentassist.ContentAssistant;
	import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
	import org.eclipse.jface.text.contentassist.IContentAssistant;
	import org.eclipse.jface.text.source.ISourceViewer;
	import org.eclipse.jface.text.source.SourceViewer;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.SelectionChangedEvent;

	import org.eclipse.ui.texteditor.ITextEditorActionConstants;
	import org.eclipse.ui.texteditor.IUpdate;


	/**
	* Dialog to edit a template.
	*/
	public class EditTemplateDialog extends StatusDialog {

	private static class SimpleCSourceViewerConfiguration extends CSourceViewerConfiguration {

	private final IContentAssistProcessor fProcessor;

	SimpleCSourceViewerConfiguration(CTextTools tools, CEditor editor, IContentAssistProcessor processor) {
	super(tools, editor);
	fProcessor= processor;
	}

	/*
	* @see SourceViewerConfiguration#getContentAssistant(ISourceViewer)
	*/
	public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {

	IPreferenceStore store= CUIPlugin.getDefault().getPreferenceStore();

	ContentAssistant assistant= new ContentAssistant();
	assistant.setContentAssistProcessor(fProcessor, IDocument.DEFAULT_CONTENT_TYPE);

	//assistant.enableAutoInsert(store.getBoolean(ContentAssistPreference.AUTOINSERT));
	boolean enabled = (store.getBoolean(ContentAssistPreference.AUTOACTIVATION_TRIGGERS_DOT)
	\|\| store.getBoolean(ContentAssistPreference.AUTOACTIVATION_TRIGGERS_ARROW)
	\|\| store.getBoolean(ContentAssistPreference.AUTOACTIVATION_TRIGGERS_DOUBLECOLON)
	);
	assistant.enableAutoActivation(enabled);

	assistant.setAutoActivationDelay(store.getInt(ContentAssistPreference.AUTOACTIVATION_DELAY));
	assistant.setProposalPopupOrientation(IContentAssistant.PROPOSAL_OVERLAY);
	assistant.setContextInformationPopupOrientation(IContentAssistant.CONTEXT_INFO_ABOVE);
	//assistant.setInformationControlCreator(getInformationControlCreator(sourceViewer));

	Display display= sourceViewer.getTextWidget().getDisplay();

	Color background= createColor(store, ContentAssistPreference.PROPOSALS_BACKGROUND, display);
	assistant.setContextInformationPopupBackground(background);
	assistant.setContextSelectorBackground(background);
	assistant.setProposalSelectorBackground(background);

	Color foreground= createColor(store, ContentAssistPreference.PROPOSALS_FOREGROUND, display);
	assistant.setContextInformationPopupForeground(foreground);
	assistant.setContextSelectorForeground(foreground);
	assistant.setProposalSelectorForeground(foreground);

	return assistant;
	}

	/**
	* Creates a color from the information stored in the given preference store.
	* Returns <code>null</code> if there is no such information available.
	*/
	private Color createColor(IPreferenceStore store, String key, Display display) {

	RGB rgb= null;

	if (store.contains(key)) {

	if (store.isDefault(key))
	rgb= PreferenceConverter.getDefaultColor(store, key);
	else
	rgb= PreferenceConverter.getColor(store, key);

	if (rgb != null)
	return new Color(display, rgb);
	}

	return null;
	}
	}

	private static class TextViewerAction extends Action implements IUpdate {

	private int fOperationCode= -1;
	private ITextOperationTarget fOperationTarget;

	public TextViewerAction(ITextViewer viewer, int operationCode) {
	fOperationCode= operationCode;
	fOperationTarget= viewer.getTextOperationTarget();
	update();
	}

	/**
	* Updates the enabled state of the action.
	* Fires a property change if the enabled state changes.
	*
	* @see Action#firePropertyChange(String, Object, Object)
	*/
	public void update() {

	boolean wasEnabled= isEnabled();
	boolean isEnabled= (fOperationTarget != null && fOperationTarget.canDoOperation(fOperationCode));
	setEnabled(isEnabled);

	if (wasEnabled != isEnabled) {
	firePropertyChange(ENABLED, wasEnabled ? Boolean.TRUE : Boolean.FALSE, isEnabled ? Boolean.TRUE : Boolean.FALSE);
	}
	}

	/**
	* @see Action#run()
	*/
	public void run() {
	if (fOperationCode != -1 && fOperationTarget != null) {
	fOperationTarget.doOperation(fOperationCode);
	}
	}
	}

	private final Template fTemplate;

	protected Text fNameText;
	private Text fDescriptionText;
	protected Combo fContextCombo;
	protected SourceViewer fPatternEditor;
	private Button fInsertVariableButton;

	protected TemplateTranslator fTranslator= new TemplateTranslator();
	protected boolean fSuppressError= true; // #4354
	private Map fGlobalActions= new HashMap(10);
	private List fSelectionActions = new ArrayList(3);
	private Vector fContextTypes= new Vector();

	protected final TemplateVariableProcessor fProcessor= new TemplateVariableProcessor();

	public EditTemplateDialog(Shell parent, Template template, boolean edit) {
	super(parent);

	setShellStyle(getShellStyle() \| SWT.MAX \| SWT.RESIZE);

	String title= edit
	? TemplateMessages.getString("EditTemplateDialog.title.edit") //$NON-NLS-1$
	: TemplateMessages.getString("EditTemplateDialog.title.new"); //$NON-NLS-1$
	setTitle(title);

	fTemplate= template;

	ContextTypeRegistry registry= ContextTypeRegistry.getInstance();
	for (Iterator iterator= registry.iterator(); iterator.hasNext(); )
	fContextTypes.add(iterator.next());

	if (fContextTypes.size() > 0)
	fProcessor.setContextType(ContextTypeRegistry.getInstance().getContextType((String) fContextTypes.get(0)));
	}

	/*
	* @see Dialog#createDialogArea(Composite)
	*/
	protected Control createDialogArea(Composite ancestor) {
	Composite parent= new Composite(ancestor, SWT.NONE);
	GridLayout layout= new GridLayout();
	layout.numColumns= 2;
	parent.setLayout(layout);
	parent.setLayoutData(new GridData(GridData.FILL_BOTH));

	createLabel(parent, TemplateMessages.getString("EditTemplateDialog.name")); //$NON-NLS-1$

	Composite composite= new Composite(parent, SWT.NONE);
	composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	layout= new GridLayout();
	layout.numColumns= 3;
	layout.marginWidth= 0;
	layout.marginHeight= 0;
	composite.setLayout(layout);

	fNameText= createText(composite);
	fNameText.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	if (fSuppressError && (fNameText.getText().trim().length() != 0))
	fSuppressError= false;

	updateButtons();
	}
	});

	createLabel(composite, TemplateMessages.getString("EditTemplateDialog.context")); //$NON-NLS-1$
	fContextCombo= new Combo(composite, SWT.READ_ONLY);

	for (Iterator iterator= fContextTypes.iterator(); iterator.hasNext(); )
	fContextCombo.add((String) iterator.next());

	fContextCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	String name= fContextCombo.getText();
	fProcessor.setContextType(ContextTypeRegistry.getInstance().getContextType(name));
	}
	});

	createLabel(parent, TemplateMessages.getString("EditTemplateDialog.description")); //$NON-NLS-1$
	fDescriptionText= createText(parent);

	composite= new Composite(parent, SWT.NONE);
	composite.setLayoutData(new GridData(GridData.FILL_VERTICAL));
	layout= new GridLayout();
	layout.marginWidth= 0;
	layout.marginHeight= 0;
	composite.setLayout(layout);

	createLabel(composite, TemplateMessages.getString("EditTemplateDialog.pattern")); //$NON-NLS-1$
	fPatternEditor= createEditor(parent);

	Label filler= new Label(composite, SWT.NONE);
	filler.setLayoutData(new GridData(GridData.FILL_VERTICAL));

	fInsertVariableButton= new Button(composite, SWT.NONE);
	fInsertVariableButton.setLayoutData(getButtonGridData(fInsertVariableButton));
	fInsertVariableButton.setText(TemplateMessages.getString("EditTemplateDialog.insert.variable")); //$NON-NLS-1$
	fInsertVariableButton.addSelectionListener(new SelectionListener() {
	public void widgetSelected(SelectionEvent e) {
	fPatternEditor.getTextWidget().setFocus();
	fPatternEditor.doOperation(ISourceViewer.CONTENTASSIST_PROPOSALS);
	}

	public void widgetDefaultSelected(SelectionEvent e) {}
	});

	fNameText.setText(fTemplate.getName());
	fDescriptionText.setText(fTemplate.getDescription());
	fContextCombo.select(getIndex(fTemplate.getContextTypeName()));

	initializeActions();

	return composite;
	}

	private static GridData getButtonGridData(Button button) {
	GridData data= new GridData(GridData.FILL_HORIZONTAL);
	data.heightHint= SWTUtil.getButtonHeigthHint(button);

	return data;
	}

	private static Label createLabel(Composite parent, String name) {
	Label label= new Label(parent, SWT.NULL);
	label.setText(name);
	label.setLayoutData(new GridData());

	return label;
	}

	private static Text createText(Composite parent) {
	Text text= new Text(parent, SWT.BORDER);
	text.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	return text;
	}

	private SourceViewer createEditor(Composite parent) {
	SourceViewer viewer= new SourceViewer(parent, null, SWT.BORDER \| SWT.V_SCROLL \| SWT.H_SCROLL);
	CTextTools tools= CUIPlugin.getDefault().getTextTools();
	viewer.configure(new SimpleCSourceViewerConfiguration(tools, null, fProcessor));
	viewer.setEditable(true);
	viewer.setDocument(new Document(fTemplate.getPattern()));

	Font font= JFaceResources.getFontRegistry().get(JFaceResources.TEXT_FONT);
	viewer.getTextWidget().setFont(font);

	Control control= viewer.getControl();
	GridData data= new GridData(GridData.FILL_BOTH);
	data.widthHint= convertWidthInCharsToPixels(60);
	data.heightHint= convertHeightInCharsToPixels(5);
	control.setLayoutData(data);

	viewer.addTextListener(new ITextListener() {
	public void textChanged(TextEvent event) {
	try {
	fTranslator.translate(event.getDocumentEvent().getDocument().get());
	} catch (CoreException e) {
	CUIPlugin.getDefault().log(e);
	// XXX dialog
	}

	updateUndoAction();
	updateButtons();
	}
	});

	viewer.addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	updateSelectionDependentActions();
	}
	});

	if (viewer instanceof ITextViewerExtension) {
	((ITextViewerExtension) viewer).prependVerifyKeyListener(new VerifyKeyListener() {
	public void verifyKey(VerifyEvent event) {
	handleVerifyKeyPressed(event);
	}
	});
	} else {
	viewer.getTextWidget().addKeyListener(new KeyListener() {
	public void keyPressed(KeyEvent e) {
	handleKeyPressed(e);
	}

	public void keyReleased(KeyEvent e) {}
	});
	}

	return viewer;
	}

	protected void handleKeyPressed(KeyEvent event) {
	if (event.stateMask != SWT.CTRL)
	return;

	switch (event.character) {
	case ' ':
	fPatternEditor.doOperation(ISourceViewer.CONTENTASSIST_PROPOSALS);
	break;

	// CTRL-Z
	case (int) 'z' - (int) 'a' + 1:
	fPatternEditor.doOperation(ITextOperationTarget.UNDO);
	break;
	}
	}

	protected void handleVerifyKeyPressed(VerifyEvent event) {
	if (!event.doit)
	return;

	if (event.stateMask != SWT.CTRL)
	return;

	switch (event.character) {
	case ' ':
	fPatternEditor.doOperation(ISourceViewer.CONTENTASSIST_PROPOSALS);
	event.doit= false;
	break;

	// CTRL-Z
	case (int) 'z' - (int) 'a' + 1:
	fPatternEditor.doOperation(ITextOperationTarget.UNDO);
	event.doit= false;
	break;
	}
	}

	private void initializeActions() {
	TextViewerAction action= new TextViewerAction(fPatternEditor, ITextOperationTarget.UNDO);
	action.setText(TemplateMessages.getString("EditTemplateDialog.undo")); //$NON-NLS-1$
	fGlobalActions.put(ITextEditorActionConstants.UNDO, action);

	action= new TextViewerAction(fPatternEditor, ITextOperationTarget.CUT);
	action.setText(TemplateMessages.getString("EditTemplateDialog.cut")); //$NON-NLS-1$
	fGlobalActions.put(ITextEditorActionConstants.CUT, action);

	action= new TextViewerAction(fPatternEditor, ITextOperationTarget.COPY);
	action.setText(TemplateMessages.getString("EditTemplateDialog.copy")); //$NON-NLS-1$
	fGlobalActions.put(ITextEditorActionConstants.COPY, action);

	action= new TextViewerAction(fPatternEditor, ITextOperationTarget.PASTE);
	action.setText(TemplateMessages.getString("EditTemplateDialog.paste")); //$NON-NLS-1$
	fGlobalActions.put(ITextEditorActionConstants.PASTE, action);

	action= new TextViewerAction(fPatternEditor, ITextOperationTarget.SELECT_ALL);
	action.setText(TemplateMessages.getString("EditTemplateDialog.select.all")); //$NON-NLS-1$
	fGlobalActions.put(ITextEditorActionConstants.SELECT_ALL, action);

	action= new TextViewerAction(fPatternEditor, ISourceViewer.CONTENTASSIST_PROPOSALS);
	action.setText(TemplateMessages.getString("EditTemplateDialog.content.assist")); //$NON-NLS-1$
	fGlobalActions.put("ContentAssistProposal", action); //$NON-NLS-1$

	fSelectionActions.add(ITextEditorActionConstants.CUT);
	fSelectionActions.add(ITextEditorActionConstants.COPY);
	fSelectionActions.add(ITextEditorActionConstants.PASTE);

	// create context menu
	MenuManager manager= new MenuManager(null, null);
	manager.setRemoveAllWhenShown(true);
	manager.addMenuListener(new IMenuListener() {
	public void menuAboutToShow(IMenuManager mgr) {
	fillContextMenu(mgr);
	}
	});

	StyledText text= fPatternEditor.getTextWidget();
	Menu menu= manager.createContextMenu(text);
	text.setMenu(menu);
	}

	protected void fillContextMenu(IMenuManager menu) {
	menu.add(new GroupMarker(ITextEditorActionConstants.GROUP_UNDO));
	menu.appendToGroup(ITextEditorActionConstants.GROUP_UNDO, (IAction) fGlobalActions.get(ITextEditorActionConstants.UNDO));

	menu.add(new Separator(ITextEditorActionConstants.GROUP_EDIT));
	menu.appendToGroup(ITextEditorActionConstants.GROUP_EDIT, (IAction) fGlobalActions.get(ITextEditorActionConstants.CUT));
	menu.appendToGroup(ITextEditorActionConstants.GROUP_EDIT, (IAction) fGlobalActions.get(ITextEditorActionConstants.COPY));
	menu.appendToGroup(ITextEditorActionConstants.GROUP_EDIT, (IAction) fGlobalActions.get(ITextEditorActionConstants.PASTE));
	menu.appendToGroup(ITextEditorActionConstants.GROUP_EDIT, (IAction) fGlobalActions.get(ITextEditorActionConstants.SELECT_ALL));

	menu.add(new Separator(IContextMenuConstants.GROUP_GENERATE));
	menu.appendToGroup(IContextMenuConstants.GROUP_GENERATE, (IAction) fGlobalActions.get("ContentAssistProposal")); //$NON-NLS-1$
	}

	protected void updateSelectionDependentActions() {
	Iterator iterator= fSelectionActions.iterator();
	while (iterator.hasNext())
	updateAction((String)iterator.next());
	}

	protected void updateUndoAction() {
	IAction action= (IAction) fGlobalActions.get(ITextEditorActionConstants.UNDO);
	if (action instanceof IUpdate)
	((IUpdate) action).update();
	}

	protected void updateAction(String actionId) {
	IAction action= (IAction) fGlobalActions.get(actionId);
	if (action instanceof IUpdate)
	((IUpdate) action).update();
	}

	private int getIndex(String context) {
	ContextTypeRegistry registry= ContextTypeRegistry.getInstance();
	registry.getContextType(context);

	if (context == null)
	return -1;

	return fContextTypes.indexOf(context);
	}

	protected void okPressed() {
	fTemplate.setName(fNameText.getText());
	fTemplate.setDescription(fDescriptionText.getText());
	fTemplate.setContext(fContextCombo.getText());
	fTemplate.setPattern(fPatternEditor.getTextWidget().getText());

	super.okPressed();
	}

	protected void updateButtons() {
	boolean valid= fNameText.getText().trim().length() != 0;

	StatusInfo status= new StatusInfo();

	if (!valid) {
	if (fSuppressError)
	status.setError(""); //$NON-NLS-1$
	else
	status.setError(TemplateMessages.getString("EditTemplateDialog.error.noname")); //$NON-NLS-1$
	} else if (fTranslator.getErrorMessage() != null) {
	status.setError(fTranslator.getErrorMessage());
	}

	updateStatus(status);
	}

	}