bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/preferences/ui/TaskTagPreferenceTab.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2001, 2004 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
  *     Jens Lukowski/Innoopract - initial renaming/restructuring
  *
  *******************************************************************************/
 package org.eclipse.wst.sse.ui.preferences.ui;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.StringTokenizer;

 import org.eclipse.core.resources.IMarker;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.IncrementalProjectBuilder;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Plugin;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.core.runtime.SubProgressMonitor;
 import org.eclipse.core.runtime.jobs.Job;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.viewers.ArrayContentProvider;
 import org.eclipse.jface.viewers.ColumnWeightData;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.ITableLabelProvider;
 import org.eclipse.jface.viewers.LabelProvider;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.TableLayout;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Image;
 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.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.help.WorkbenchHelp;
 import org.eclipse.wst.sse.core.ModelPlugin;
 import org.eclipse.wst.sse.core.participants.TaskTagSeeker;
 import org.eclipse.wst.sse.core.preferences.CommonModelPreferenceNames;
 import org.eclipse.wst.sse.core.util.StringUtils;
 import org.eclipse.wst.sse.ui.internal.Logger;
 import org.eclipse.wst.sse.ui.internal.SSEUIPlugin;
 import org.eclipse.wst.sse.ui.internal.editor.IHelpContextIds;

 public class TaskTagPreferenceTab implements IPreferenceTab {

 	public class InternalTableLabelProvider extends LabelProvider implements ITableLabelProvider {
 		public InternalTableLabelProvider() {
 			super();
 		}

 		public Image getColumnImage(Object element, int columnIndex) {
 			return null;
 		}

 		public String getColumnText(Object element, int columnIndex) {
 			if (columnIndex < 1)
 				return element.toString();
 			for (int i = 0; i < fTags.length; i++) {
 				if (fTags[i].equals(element)) {
 					if (fPriorities[i].intValue() == IMarker.PRIORITY_HIGH) {
 						return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.0"); //$NON-NLS-1$
 					}
 					else if (fPriorities[i].intValue() == IMarker.PRIORITY_LOW) {
 						return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.1"); //$NON-NLS-1$
 					}
 					else {
 						return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.2"); //$NON-NLS-1$
 					}
 				}
 			}
 			return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.3"); //$NON-NLS-1$
 		}
 	}

 	public class TaskTagDialog extends Dialog {
 		public int priority = IMarker.PRIORITY_NORMAL;
 		Combo priorityCombo = null;
 		Text tagText = null;
 		public String text = ""; //$NON-NLS-1$

 		public TaskTagDialog(Shell parentShell) {
 			super(parentShell);
 			setShellStyle(getShellStyle() | SWT.RESIZE);
 		}

 		protected void configureShell(Shell newShell) {
 			super.configureShell(newShell);
 			newShell.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.5")); //$NON-NLS-1$
 		}

 		protected Control createButtonBar(Composite parent) {
 			Control c = super.createButtonBar(parent);
 			getButton(IDialogConstants.OK_ID).setEnabled(text.length() > 0);
 			return c;
 		}

 		protected Control createDialogArea(Composite parent) {
 			Composite composite = new Composite(parent, SWT.NONE);
 			composite.setLayout(new GridLayout(2, false));
 			composite.setLayoutData(new GridData(GridData.FILL_BOTH));
 			Label label = new Label(composite, SWT.NONE);
 			label.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.6")); //$NON-NLS-1$
 			label.setLayoutData(new GridData());
 			tagText = new Text(composite, SWT.BORDER);
 			tagText.setText(text);
 			tagText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 			tagText.addModifyListener(new ModifyListener() {
 				public void modifyText(ModifyEvent e) {
 					getButton(IDialogConstants.OK_ID).setEnabled(tagText.getText().length() > 0 && !Arrays.asList(fTags).contains(tagText.getText()));
 				}
 			});

 			label = new Label(composite, SWT.NONE);
 			label.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.7")); //$NON-NLS-1$
 			label.setLayoutData(new GridData());
 			priorityCombo = new Combo(composite, SWT.READ_ONLY | SWT.SINGLE);
 			priorityCombo.setItems(new String[]{SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.8"), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.9"), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.10")}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 			priorityCombo.select(2 - priority);
 			priorityCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 			priorityCombo.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent e) {
 					priority = 2 - priorityCombo.getSelectionIndex();
 				}
 			});
 			return composite;
 		}

 		/*
 		 * (non-Javadoc)
 		 *
 		 * @see org.eclipse.jface.dialogs.Dialog#okPressed()
 		 */
 		protected void okPressed() {
 			text = tagText.getText();
 			priority = 2 - priorityCombo.getSelectionIndex();
 			super.okPressed();
 		}
 	}

 	Control fControl;

 	Button fEnableCheckbox = null;

 	boolean fEnableTaskTags = true;

 	Integer[] fPriorities;

 	String[] fTags;

 	boolean isDirty = false;

 	TableViewer valueTable = null;

 	/**
 	 *
 	 */
 	public TaskTagPreferenceTab() {
 		super();
 	}

 	/**
 	 *
 	 */
 	protected void addTag() {
 		TaskTagDialog dlg = new TaskTagDialog(fControl.getShell());
 		String tag = ""; //$NON-NLS-1$
 		int priority = IMarker.PRIORITY_NORMAL;
 		int result = dlg.open();
 		if (result == Window.OK) {
 			isDirty = true;
 			tag = dlg.text;
 			priority = dlg.priority;
 			List newTags = new ArrayList(Arrays.asList(fTags));
 			newTags.add(tag);
 			fTags = (String[]) newTags.toArray(new String[0]);
 			List newPriorities = new ArrayList(Arrays.asList(fPriorities));
 			newPriorities.add(new Integer(priority));
 			fPriorities = (Integer[]) newPriorities.toArray(new Integer[0]);
 			valueTable.setInput(fTags);
 			valueTable.getTable().setSelection(fTags.length - 1);
 		}
 	}

 	public Control createContents(Composite parent) {
 		loadPreferenceValues();

 		Composite composite = new Composite(parent, SWT.NONE);
 		composite.setLayout(new GridLayout(2, false));
 		fControl = composite;

 		fEnableCheckbox = new Button(composite, SWT.CHECK);
 		fEnableCheckbox.setSelection(fEnableTaskTags);
 		fEnableCheckbox.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.31"));
 		fEnableCheckbox.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_CENTER, GridData.HORIZONTAL_ALIGN_BEGINNING, false, false, 2, 1));

 		valueTable = new TableViewer(composite, SWT.BORDER | SWT.FULL_SELECTION | SWT.H_SCROLL | SWT.V_SCROLL);
 		valueTable.getControl().setLayoutData(new GridData(GridData.FILL_BOTH));
 		TableColumn textColumn = new TableColumn(valueTable.getTable(), SWT.NONE, 0);
 		textColumn.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.12")); //$NON-NLS-1$
 		TableColumn priorityColumn = new TableColumn(valueTable.getTable(), SWT.NONE, 1);
 		priorityColumn.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.13")); //$NON-NLS-1$
 		valueTable.setContentProvider(new ArrayContentProvider());
 		valueTable.setLabelProvider(new InternalTableLabelProvider());
 		valueTable.getTable().setLinesVisible(true);
 		valueTable.getTable().setHeaderVisible(true);
 		TableLayout layout = new TableLayout();
 		layout.addColumnData(new ColumnWeightData(1, 140, true));
 		layout.addColumnData(new ColumnWeightData(1, 140, true));
 		valueTable.getTable().setLayout(layout);

 		Composite buttons = new Composite(composite, SWT.NONE);
 		buttons.setLayout(new GridLayout());
 		buttons.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));

 		final Button addButton = new Button(buttons, SWT.PUSH);
 		addButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.14")); //$NON-NLS-1$
 		addButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER));
 		final Button editButton = new Button(buttons, SWT.PUSH);
 		editButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.15")); //$NON-NLS-1$
 		editButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER));
 		final Button removeButton = new Button(buttons, SWT.PUSH);
 		removeButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.16")); //$NON-NLS-1$
 		removeButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER));

 		Label spacer = new Label(buttons, SWT.NONE);
 		spacer.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER));
 		final Button upButton = new Button(buttons, SWT.PUSH);
 		upButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.17")); //$NON-NLS-1$
 		upButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER));
 		final Button downButton = new Button(buttons, SWT.PUSH);
 		downButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.18")); //$NON-NLS-1$
 		downButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER));

 		editButton.setEnabled(false);
 		removeButton.setEnabled(false);
 		upButton.setEnabled(false);
 		downButton.setEnabled(false);

 		Label warning = new Label(composite, SWT.NONE);
 		warning.setLayoutData(new GridData());
 		warning.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.19")); //$NON-NLS-1$

 		valueTable.addPostSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent event) {
 				boolean enabledForSelection = !event.getSelection().isEmpty();
 				editButton.setEnabled(enabledForSelection);
 				removeButton.setEnabled(enabledForSelection);
 				if (valueTable.getTable() != null && !valueTable.getTable().isDisposed()) {
 					upButton.setEnabled(enabledForSelection && valueTable.getTable().getSelectionIndex() > 0);
 					downButton.setEnabled(enabledForSelection && valueTable.getTable().getSelectionIndex() < fTags.length - 1);
 				}
 				else {
 					upButton.setEnabled(false);
 					downButton.setEnabled(false);
 				}
 			}
 		});
 		fEnableCheckbox.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				fEnableTaskTags = fEnableCheckbox.getSelection();
 				isDirty = true;
 			}
 		});
 		addButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				addTag();
 			}
 		});
 		editButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				editTag(valueTable.getTable().getSelectionIndex());
 			}
 		});
 		removeButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				removeTag(valueTable.getTable().getSelectionIndex());
 			}
 		});
 		upButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				moveTagUp(valueTable.getTable().getSelectionIndex());
 				upButton.setEnabled(valueTable.getTable().getSelectionIndex() > 0);
 				downButton.setEnabled(valueTable.getTable().getSelectionIndex() < fTags.length - 1);
 				if (!upButton.isEnabled()) {
 					downButton.setFocus();
 				}
 			}
 		});
 		downButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				moveTagDown(valueTable.getTable().getSelectionIndex());
 				upButton.setEnabled(valueTable.getTable().getSelectionIndex() > 0);
 				downButton.setEnabled(valueTable.getTable().getSelectionIndex() < fTags.length - 1);
 				if (!downButton.isEnabled()) {
 					upButton.setFocus();
 				}
 			}
 		});


 		valueTable.setInput(fTags);

 		WorkbenchHelp.setHelp(composite, IHelpContextIds.PREFWEBX_TASKTAGS_HELPID);
 		return composite;
 	}

 	/**
 	 * @param selection
 	 */
 	protected void editTag(int i) {
 		if (i < 0) {
 			return;
 		}

 		int selection = valueTable.getTable().getSelectionIndex();
 		TaskTagDialog dlg = new TaskTagDialog(fControl.getShell());
 		dlg.text = fTags[selection];
 		dlg.priority = fPriorities[selection].intValue();
 		int result = dlg.open();
 		if (result == Window.OK) {
 			isDirty = true;
 			fTags[selection] = dlg.text;
 			fPriorities[selection] = new Integer(dlg.priority);
 			valueTable.refresh();
 		}
 	}

 	public String getTitle() {
 		return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.20"); //$NON-NLS-1$
 	}

 	private void loadPreferenceValues() {
 		Plugin modelPlugin = ModelPlugin.getDefault();
 		String tags = modelPlugin.getPluginPreferences().getString(CommonModelPreferenceNames.TASK_TAG_TAGS);
 		String priorities = modelPlugin.getPluginPreferences().getString(CommonModelPreferenceNames.TASK_TAG_PRIORITIES);
 		loadTagsAndPriorities(tags, priorities);
 		fEnableTaskTags = modelPlugin.getPluginPreferences().getBoolean(CommonModelPreferenceNames.TASK_TAG_ENABLE);
 	}

 	/**
 	 * @param tags
 	 * @param priorities
 	 */
 	private void loadTagsAndPriorities(String tags, String priorities) {
 		fTags = StringUtils.unpack(tags);

 		StringTokenizer toker = null;
 		List list = new ArrayList();

 		toker = new StringTokenizer(priorities, ","); //$NON-NLS-1$
 		while (toker.hasMoreTokens()) {
 			Integer number = null;
 			try {
 				number = Integer.valueOf(toker.nextToken());
 			}
 			catch (NumberFormatException e) {
 				number = new Integer(IMarker.PRIORITY_NORMAL);
 			}
 			list.add(number);
 		}
 		fPriorities = (Integer[]) list.toArray(new Integer[0]);
 	}

 	protected void moveTagDown(int i) {
 		isDirty = true;
 		String tag = fTags[i];
 		Integer priority = fPriorities[i];
 		fTags[i] = fTags[i + 1];
 		fPriorities[i] = fPriorities[i + 1];
 		fTags[i + 1] = tag;
 		fPriorities[i + 1] = priority;
 		valueTable.refresh(fTags);
 		valueTable.getTable().select(i + 1);
 	}

 	protected void moveTagUp(int i) {
 		isDirty = true;
 		String tag = fTags[i];
 		Integer priority = fPriorities[i];
 		fTags[i] = fTags[i - 1];
 		fPriorities[i] = fPriorities[i - 1];
 		fTags[i - 1] = tag;
 		fPriorities[i - 1] = priority;
 		valueTable.refresh(fTags);
 		valueTable.getTable().select(i - 1);
 	}

 	public void performApply() {
 		save();

 		// To optimize builder performance when the tags are all removed,
 		// the markers MUST be removed NOW
 		if (fTags.length == 0) {
 			try {
 				// When the tags are all removed, remove all the related
 				// markers so the builder can skip the marker deletion step
 				ResourcesPlugin.getWorkspace().getRoot().deleteMarkers(TaskTagSeeker.getTaskMarkerType(), true, IResource.DEPTH_INFINITE);
 			}
 			catch (CoreException e) {
 				Logger.logException(e);
 			}
 		}
 		else if (isDirty) {
 			MessageDialog dialog = new MessageDialog(fControl.getShell(), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.22"), fControl.getShell().getImage(), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.23"), MessageDialog.QUESTION, new String[]{SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.24"), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.25"), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.26")}, 2); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
 			int button = dialog.open();
 			if (button == 0) {
 				Job buildJob = new Job(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.27")) { //$NON-NLS-1$
 					public Object getAdapter(Class adapter) {
 						return null;
 					}

 					protected IStatus run(IProgressMonitor monitor) {
 						IStatus status = null;
 						IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
 						int errorCount = 0;
 						for (int i = 0; i < projects.length && !monitor.isCanceled(); i++) {
 							try {
 								projects[i].build(IncrementalProjectBuilder.FULL_BUILD, ModelPlugin.STRUCTURED_BUILDER, new HashMap(), new SubProgressMonitor(monitor, projects.length));
 							}
 							catch (CoreException e) {
 								Logger.logException(e);
 								errorCount++;
 							}
 						}
 						if (monitor.isCanceled()) {
 							status = new Status(IStatus.CANCEL, SSEUIPlugin.ID, IStatus.OK, SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.28"), null); //$NON-NLS-1$
 						}
 						else if (errorCount == 0) {
 							status = new Status(IStatus.OK, SSEUIPlugin.ID, IStatus.OK, SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.29"), null); //$NON-NLS-1$
 						}
 						else {
 							status = new Status(IStatus.ERROR, SSEUIPlugin.ID, IStatus.OK, SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.30"), null); //$NON-NLS-1$
 						}
 						return status;
 					}
 				};
 				buildJob.schedule(500);
 			}

 		}
 		isDirty = false;
 	}

 	public void performDefaults() {
 		Plugin modelPlugin = ModelPlugin.getDefault();
 		String tags = modelPlugin.getPluginPreferences().getDefaultString(CommonModelPreferenceNames.TASK_TAG_TAGS);
 		String priorities = modelPlugin.getPluginPreferences().getDefaultString(CommonModelPreferenceNames.TASK_TAG_PRIORITIES);
 		loadTagsAndPriorities(tags, priorities);
 		if (valueTable != null && valueTable.getControl() != null && !valueTable.getControl().isDisposed()) {
 			valueTable.setInput(fTags);
 		}
 		fEnableTaskTags = modelPlugin.getPluginPreferences().getDefaultBoolean(CommonModelPreferenceNames.TASK_TAG_ENABLE);
 		fEnableCheckbox.setSelection(fEnableTaskTags);

 		isDirty = false;
 	}

 	public void performOk() {
 		performApply();
 	}

 	/**
 	 * @param selection
 	 */
 	protected void removeTag(int i) {
 		if (i < 0) {
 			return;
 		}
 		isDirty = true;
 		List tags = new ArrayList(Arrays.asList(fTags));
 		List priorities = new ArrayList(Arrays.asList(fPriorities));
 		tags.remove(i);
 		priorities.remove(i);
 		fTags = (String[]) tags.toArray(new String[0]);
 		fPriorities = (Integer[]) priorities.toArray(new Integer[0]);
 		valueTable.setInput(fTags);
 	}

 	/**
 	 *
 	 */
 	private void save() {
 		String tags = StringUtils.pack(fTags);
 		Plugin modelPlugin = ModelPlugin.getDefault();
 		modelPlugin.getPluginPreferences().setValue(CommonModelPreferenceNames.TASK_TAG_TAGS, tags);

 		StringBuffer buf = new StringBuffer();
 		for (int i = 0; i < fPriorities.length; i++) {
 			buf.append(String.valueOf(fPriorities[i]));
 			if (i < fPriorities.length - 1)
 				buf.append(","); //$NON-NLS-1$
 		}
 		modelPlugin.getPluginPreferences().setValue(CommonModelPreferenceNames.TASK_TAG_PRIORITIES, buf.toString());
 		modelPlugin.getPluginPreferences().setValue(CommonModelPreferenceNames.TASK_TAG_ENABLE, fEnableTaskTags);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2001, 2004 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
	* Jens Lukowski/Innoopract - initial renaming/restructuring
	*
	*******************************************************************************/
	package org.eclipse.wst.sse.ui.preferences.ui;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.HashMap;
	import java.util.List;
	import java.util.StringTokenizer;

	import org.eclipse.core.resources.IMarker;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.IncrementalProjectBuilder;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Plugin;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.core.runtime.SubProgressMonitor;
	import org.eclipse.core.runtime.jobs.Job;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.viewers.ArrayContentProvider;
	import org.eclipse.jface.viewers.ColumnWeightData;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.ITableLabelProvider;
	import org.eclipse.jface.viewers.LabelProvider;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.TableLayout;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.window.Window;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Image;
	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.Label;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.help.WorkbenchHelp;
	import org.eclipse.wst.sse.core.ModelPlugin;
	import org.eclipse.wst.sse.core.participants.TaskTagSeeker;
	import org.eclipse.wst.sse.core.preferences.CommonModelPreferenceNames;
	import org.eclipse.wst.sse.core.util.StringUtils;
	import org.eclipse.wst.sse.ui.internal.Logger;
	import org.eclipse.wst.sse.ui.internal.SSEUIPlugin;
	import org.eclipse.wst.sse.ui.internal.editor.IHelpContextIds;

	public class TaskTagPreferenceTab implements IPreferenceTab {

	public class InternalTableLabelProvider extends LabelProvider implements ITableLabelProvider {
	public InternalTableLabelProvider() {
	super();
	}

	public Image getColumnImage(Object element, int columnIndex) {
	return null;
	}

	public String getColumnText(Object element, int columnIndex) {
	if (columnIndex < 1)
	return element.toString();
	for (int i = 0; i < fTags.length; i++) {
	if (fTags[i].equals(element)) {
	if (fPriorities[i].intValue() == IMarker.PRIORITY_HIGH) {
	return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.0"); //$NON-NLS-1$
	}
	else if (fPriorities[i].intValue() == IMarker.PRIORITY_LOW) {
	return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.1"); //$NON-NLS-1$
	}
	else {
	return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.2"); //$NON-NLS-1$
	}
	}
	}
	return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.3"); //$NON-NLS-1$
	}
	}

	public class TaskTagDialog extends Dialog {
	public int priority = IMarker.PRIORITY_NORMAL;
	Combo priorityCombo = null;
	Text tagText = null;
	public String text = ""; //$NON-NLS-1$

	public TaskTagDialog(Shell parentShell) {
	super(parentShell);
	setShellStyle(getShellStyle() \| SWT.RESIZE);
	}

	protected void configureShell(Shell newShell) {
	super.configureShell(newShell);
	newShell.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.5")); //$NON-NLS-1$
	}

	protected Control createButtonBar(Composite parent) {
	Control c = super.createButtonBar(parent);
	getButton(IDialogConstants.OK_ID).setEnabled(text.length() > 0);
	return c;
	}

	protected Control createDialogArea(Composite parent) {
	Composite composite = new Composite(parent, SWT.NONE);
	composite.setLayout(new GridLayout(2, false));
	composite.setLayoutData(new GridData(GridData.FILL_BOTH));
	Label label = new Label(composite, SWT.NONE);
	label.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.6")); //$NON-NLS-1$
	label.setLayoutData(new GridData());
	tagText = new Text(composite, SWT.BORDER);
	tagText.setText(text);
	tagText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	tagText.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	getButton(IDialogConstants.OK_ID).setEnabled(tagText.getText().length() > 0 && !Arrays.asList(fTags).contains(tagText.getText()));
	}
	});

	label = new Label(composite, SWT.NONE);
	label.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.7")); //$NON-NLS-1$
	label.setLayoutData(new GridData());
	priorityCombo = new Combo(composite, SWT.READ_ONLY \| SWT.SINGLE);
	priorityCombo.setItems(new String[]{SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.8"), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.9"), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.10")}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	priorityCombo.select(2 - priority);
	priorityCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	priorityCombo.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	priority = 2 - priorityCombo.getSelectionIndex();
	}
	});
	return composite;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.jface.dialogs.Dialog#okPressed()
	*/
	protected void okPressed() {
	text = tagText.getText();
	priority = 2 - priorityCombo.getSelectionIndex();
	super.okPressed();
	}
	}

	Control fControl;

	Button fEnableCheckbox = null;

	boolean fEnableTaskTags = true;

	Integer[] fPriorities;

	String[] fTags;

	boolean isDirty = false;

	TableViewer valueTable = null;

	/**
	*
	*/
	public TaskTagPreferenceTab() {
	super();
	}

	/**
	*
	*/
	protected void addTag() {
	TaskTagDialog dlg = new TaskTagDialog(fControl.getShell());
	String tag = ""; //$NON-NLS-1$
	int priority = IMarker.PRIORITY_NORMAL;
	int result = dlg.open();
	if (result == Window.OK) {
	isDirty = true;
	tag = dlg.text;
	priority = dlg.priority;
	List newTags = new ArrayList(Arrays.asList(fTags));
	newTags.add(tag);
	fTags = (String[]) newTags.toArray(new String[0]);
	List newPriorities = new ArrayList(Arrays.asList(fPriorities));
	newPriorities.add(new Integer(priority));
	fPriorities = (Integer[]) newPriorities.toArray(new Integer[0]);
	valueTable.setInput(fTags);
	valueTable.getTable().setSelection(fTags.length - 1);
	}
	}

	public Control createContents(Composite parent) {
	loadPreferenceValues();

	Composite composite = new Composite(parent, SWT.NONE);
	composite.setLayout(new GridLayout(2, false));
	fControl = composite;

	fEnableCheckbox = new Button(composite, SWT.CHECK);
	fEnableCheckbox.setSelection(fEnableTaskTags);
	fEnableCheckbox.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.31"));
	fEnableCheckbox.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_CENTER, GridData.HORIZONTAL_ALIGN_BEGINNING, false, false, 2, 1));

	valueTable = new TableViewer(composite, SWT.BORDER \| SWT.FULL_SELECTION \| SWT.H_SCROLL \| SWT.V_SCROLL);
	valueTable.getControl().setLayoutData(new GridData(GridData.FILL_BOTH));
	TableColumn textColumn = new TableColumn(valueTable.getTable(), SWT.NONE, 0);
	textColumn.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.12")); //$NON-NLS-1$
	TableColumn priorityColumn = new TableColumn(valueTable.getTable(), SWT.NONE, 1);
	priorityColumn.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.13")); //$NON-NLS-1$
	valueTable.setContentProvider(new ArrayContentProvider());
	valueTable.setLabelProvider(new InternalTableLabelProvider());
	valueTable.getTable().setLinesVisible(true);
	valueTable.getTable().setHeaderVisible(true);
	TableLayout layout = new TableLayout();
	layout.addColumnData(new ColumnWeightData(1, 140, true));
	layout.addColumnData(new ColumnWeightData(1, 140, true));
	valueTable.getTable().setLayout(layout);

	Composite buttons = new Composite(composite, SWT.NONE);
	buttons.setLayout(new GridLayout());
	buttons.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));

	final Button addButton = new Button(buttons, SWT.PUSH);
	addButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.14")); //$NON-NLS-1$
	addButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_CENTER));
	final Button editButton = new Button(buttons, SWT.PUSH);
	editButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.15")); //$NON-NLS-1$
	editButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_CENTER));
	final Button removeButton = new Button(buttons, SWT.PUSH);
	removeButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.16")); //$NON-NLS-1$
	removeButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_CENTER));

	Label spacer = new Label(buttons, SWT.NONE);
	spacer.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_CENTER));
	final Button upButton = new Button(buttons, SWT.PUSH);
	upButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.17")); //$NON-NLS-1$
	upButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_CENTER));
	final Button downButton = new Button(buttons, SWT.PUSH);
	downButton.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.18")); //$NON-NLS-1$
	downButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_CENTER));

	editButton.setEnabled(false);
	removeButton.setEnabled(false);
	upButton.setEnabled(false);
	downButton.setEnabled(false);

	Label warning = new Label(composite, SWT.NONE);
	warning.setLayoutData(new GridData());
	warning.setText(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.19")); //$NON-NLS-1$

	valueTable.addPostSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	boolean enabledForSelection = !event.getSelection().isEmpty();
	editButton.setEnabled(enabledForSelection);
	removeButton.setEnabled(enabledForSelection);
	if (valueTable.getTable() != null && !valueTable.getTable().isDisposed()) {
	upButton.setEnabled(enabledForSelection && valueTable.getTable().getSelectionIndex() > 0);
	downButton.setEnabled(enabledForSelection && valueTable.getTable().getSelectionIndex() < fTags.length - 1);
	}
	else {
	upButton.setEnabled(false);
	downButton.setEnabled(false);
	}
	}
	});
	fEnableCheckbox.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	fEnableTaskTags = fEnableCheckbox.getSelection();
	isDirty = true;
	}
	});
	addButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	addTag();
	}
	});
	editButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	editTag(valueTable.getTable().getSelectionIndex());
	}
	});
	removeButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	removeTag(valueTable.getTable().getSelectionIndex());
	}
	});
	upButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	moveTagUp(valueTable.getTable().getSelectionIndex());
	upButton.setEnabled(valueTable.getTable().getSelectionIndex() > 0);
	downButton.setEnabled(valueTable.getTable().getSelectionIndex() < fTags.length - 1);
	if (!upButton.isEnabled()) {
	downButton.setFocus();
	}
	}
	});
	downButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	moveTagDown(valueTable.getTable().getSelectionIndex());
	upButton.setEnabled(valueTable.getTable().getSelectionIndex() > 0);
	downButton.setEnabled(valueTable.getTable().getSelectionIndex() < fTags.length - 1);
	if (!downButton.isEnabled()) {
	upButton.setFocus();
	}
	}
	});


	valueTable.setInput(fTags);

	WorkbenchHelp.setHelp(composite, IHelpContextIds.PREFWEBX_TASKTAGS_HELPID);
	return composite;
	}

	/**
	* @param selection
	*/
	protected void editTag(int i) {
	if (i < 0) {
	return;
	}

	int selection = valueTable.getTable().getSelectionIndex();
	TaskTagDialog dlg = new TaskTagDialog(fControl.getShell());
	dlg.text = fTags[selection];
	dlg.priority = fPriorities[selection].intValue();
	int result = dlg.open();
	if (result == Window.OK) {
	isDirty = true;
	fTags[selection] = dlg.text;
	fPriorities[selection] = new Integer(dlg.priority);
	valueTable.refresh();
	}
	}

	public String getTitle() {
	return SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.20"); //$NON-NLS-1$
	}

	private void loadPreferenceValues() {
	Plugin modelPlugin = ModelPlugin.getDefault();
	String tags = modelPlugin.getPluginPreferences().getString(CommonModelPreferenceNames.TASK_TAG_TAGS);
	String priorities = modelPlugin.getPluginPreferences().getString(CommonModelPreferenceNames.TASK_TAG_PRIORITIES);
	loadTagsAndPriorities(tags, priorities);
	fEnableTaskTags = modelPlugin.getPluginPreferences().getBoolean(CommonModelPreferenceNames.TASK_TAG_ENABLE);
	}

	/**
	* @param tags
	* @param priorities
	*/
	private void loadTagsAndPriorities(String tags, String priorities) {
	fTags = StringUtils.unpack(tags);

	StringTokenizer toker = null;
	List list = new ArrayList();

	toker = new StringTokenizer(priorities, ","); //$NON-NLS-1$
	while (toker.hasMoreTokens()) {
	Integer number = null;
	try {
	number = Integer.valueOf(toker.nextToken());
	}
	catch (NumberFormatException e) {
	number = new Integer(IMarker.PRIORITY_NORMAL);
	}
	list.add(number);
	}
	fPriorities = (Integer[]) list.toArray(new Integer[0]);
	}

	protected void moveTagDown(int i) {
	isDirty = true;
	String tag = fTags[i];
	Integer priority = fPriorities[i];
	fTags[i] = fTags[i + 1];
	fPriorities[i] = fPriorities[i + 1];
	fTags[i + 1] = tag;
	fPriorities[i + 1] = priority;
	valueTable.refresh(fTags);
	valueTable.getTable().select(i + 1);
	}

	protected void moveTagUp(int i) {
	isDirty = true;
	String tag = fTags[i];
	Integer priority = fPriorities[i];
	fTags[i] = fTags[i - 1];
	fPriorities[i] = fPriorities[i - 1];
	fTags[i - 1] = tag;
	fPriorities[i - 1] = priority;
	valueTable.refresh(fTags);
	valueTable.getTable().select(i - 1);
	}

	public void performApply() {
	save();

	// To optimize builder performance when the tags are all removed,
	// the markers MUST be removed NOW
	if (fTags.length == 0) {
	try {
	// When the tags are all removed, remove all the related
	// markers so the builder can skip the marker deletion step
	ResourcesPlugin.getWorkspace().getRoot().deleteMarkers(TaskTagSeeker.getTaskMarkerType(), true, IResource.DEPTH_INFINITE);
	}
	catch (CoreException e) {
	Logger.logException(e);
	}
	}
	else if (isDirty) {
	MessageDialog dialog = new MessageDialog(fControl.getShell(), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.22"), fControl.getShell().getImage(), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.23"), MessageDialog.QUESTION, new String[]{SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.24"), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.25"), SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.26")}, 2); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
	int button = dialog.open();
	if (button == 0) {
	Job buildJob = new Job(SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.27")) { //$NON-NLS-1$
	public Object getAdapter(Class adapter) {
	return null;
	}

	protected IStatus run(IProgressMonitor monitor) {
	IStatus status = null;
	IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
	int errorCount = 0;
	for (int i = 0; i < projects.length && !monitor.isCanceled(); i++) {
	try {
	projects[i].build(IncrementalProjectBuilder.FULL_BUILD, ModelPlugin.STRUCTURED_BUILDER, new HashMap(), new SubProgressMonitor(monitor, projects.length));
	}
	catch (CoreException e) {
	Logger.logException(e);
	errorCount++;
	}
	}
	if (monitor.isCanceled()) {
	status = new Status(IStatus.CANCEL, SSEUIPlugin.ID, IStatus.OK, SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.28"), null); //$NON-NLS-1$
	}
	else if (errorCount == 0) {
	status = new Status(IStatus.OK, SSEUIPlugin.ID, IStatus.OK, SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.29"), null); //$NON-NLS-1$
	}
	else {
	status = new Status(IStatus.ERROR, SSEUIPlugin.ID, IStatus.OK, SSEUIPlugin.getResourceString("%TaskTagPreferenceTab.30"), null); //$NON-NLS-1$
	}
	return status;
	}
	};
	buildJob.schedule(500);
	}

	}
	isDirty = false;
	}

	public void performDefaults() {
	Plugin modelPlugin = ModelPlugin.getDefault();
	String tags = modelPlugin.getPluginPreferences().getDefaultString(CommonModelPreferenceNames.TASK_TAG_TAGS);
	String priorities = modelPlugin.getPluginPreferences().getDefaultString(CommonModelPreferenceNames.TASK_TAG_PRIORITIES);
	loadTagsAndPriorities(tags, priorities);
	if (valueTable != null && valueTable.getControl() != null && !valueTable.getControl().isDisposed()) {
	valueTable.setInput(fTags);
	}
	fEnableTaskTags = modelPlugin.getPluginPreferences().getDefaultBoolean(CommonModelPreferenceNames.TASK_TAG_ENABLE);
	fEnableCheckbox.setSelection(fEnableTaskTags);

	isDirty = false;
	}

	public void performOk() {
	performApply();
	}

	/**
	* @param selection
	*/
	protected void removeTag(int i) {
	if (i < 0) {
	return;
	}
	isDirty = true;
	List tags = new ArrayList(Arrays.asList(fTags));
	List priorities = new ArrayList(Arrays.asList(fPriorities));
	tags.remove(i);
	priorities.remove(i);
	fTags = (String[]) tags.toArray(new String[0]);
	fPriorities = (Integer[]) priorities.toArray(new Integer[0]);
	valueTable.setInput(fTags);
	}

	/**
	*
	*/
	private void save() {
	String tags = StringUtils.pack(fTags);
	Plugin modelPlugin = ModelPlugin.getDefault();
	modelPlugin.getPluginPreferences().setValue(CommonModelPreferenceNames.TASK_TAG_TAGS, tags);

	StringBuffer buf = new StringBuffer();
	for (int i = 0; i < fPriorities.length; i++) {
	buf.append(String.valueOf(fPriorities[i]));
	if (i < fPriorities.length - 1)
	buf.append(","); //$NON-NLS-1$
	}
	modelPlugin.getPluginPreferences().setValue(CommonModelPreferenceNames.TASK_TAG_PRIORITIES, buf.toString());
	modelPlugin.getPluginPreferences().setValue(CommonModelPreferenceNames.TASK_TAG_ENABLE, fEnableTaskTags);
	}
	}