/*******************************************************************************
 * Copyright (c) 2001, 2008 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.internal.actions;

import java.util.ResourceBundle;

import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.action.GroupMarker;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IStatusLineManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.editors.text.TextEditorActionContributor;
import org.eclipse.ui.ide.IDEActionFactory;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.ITextEditorActionConstants;
import org.eclipse.ui.texteditor.ITextEditorActionDefinitionIds;
import org.eclipse.ui.texteditor.ITextEditorExtension;
import org.eclipse.ui.texteditor.RetargetTextEditorAction;
import org.eclipse.wst.sse.ui.internal.ExtendedEditorActionBuilder;
import org.eclipse.wst.sse.ui.internal.GotoAnnotationAction;
import org.eclipse.wst.sse.ui.internal.IExtendedContributor;
import org.eclipse.wst.sse.ui.internal.ISourceViewerActionBarContributor;
import org.eclipse.wst.sse.ui.internal.SSEUIMessages;
import org.eclipse.wst.sse.ui.internal.ui.OffsetStatusLineContributionItem;

/**
 * This class should not be used inside multi page editor's
 * ActionBarContributor, since cascaded init() call from the
 * ActionBarContributor will causes exception and it leads to lose whole
 * toolbars.
 * 
 * Instead, use SourcePageActionContributor for source page contributor of
 * multi page editor.
 * 
 * Note that this class is still valid for single page editor
 */
public class ActionContributor extends TextEditorActionContributor implements ISourceViewerActionBarContributor, IExtendedContributor {

	public static final boolean _showDebugStatus = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.ui/actioncontributor/debugstatusfields")); //$NON-NLS-1$ //$NON-NLS-2$

	private static final String[] EDITOR_IDS = {"org.eclipse.wst.sse.ui.StructuredTextEditor"}; //$NON-NLS-1$

	protected IExtendedContributor extendedContributor;
	protected RetargetTextEditorAction fAddBlockComment = null;

	protected Separator fCommandsSeparator = null;

	private OffsetStatusLineContributionItem fDebugStatusOffset = null;
	protected MenuManager fExpandSelectionToMenu = null;
	protected GroupMarker fMenuAdditionsGroupMarker = null;
	protected GotoAnnotationAction fNextAnnotation = null;

	protected GotoAnnotationAction fPreviousAnnotation = null;
	protected RetargetTextEditorAction fRemoveBlockComment = null;
	protected RetargetTextEditorAction fShiftLeft = null;
	protected RetargetTextEditorAction fShiftRight = null;
	protected RetargetTextEditorAction fStructureSelectEnclosingAction = null;
	protected RetargetTextEditorAction fStructureSelectHistoryAction = null;
	protected RetargetTextEditorAction fStructureSelectNextAction = null;
	protected RetargetTextEditorAction fStructureSelectPreviousAction = null;

	protected RetargetTextEditorAction fToggleComment = null;
	protected RetargetTextEditorAction fToggleInsertModeAction;
	protected GroupMarker fToolbarAdditionsGroupMarker = null;
	protected Separator fToolbarSeparator = null;
	
	protected RetargetTextEditorAction fGotoMatchingBracketAction = null;

	public ActionContributor() {
		super();

		ResourceBundle resourceBundle = SSEUIMessages.getResourceBundle();

		fCommandsSeparator = new Separator();

		// edit commands
		fStructureSelectEnclosingAction = new RetargetTextEditorAction(resourceBundle, StructuredTextEditorActionConstants.ACTION_NAME_STRUCTURE_SELECT_ENCLOSING + StructuredTextEditorActionConstants.UNDERSCORE);
		fStructureSelectEnclosingAction.setActionDefinitionId(ActionDefinitionIds.STRUCTURE_SELECT_ENCLOSING);

		fStructureSelectNextAction = new RetargetTextEditorAction(resourceBundle, StructuredTextEditorActionConstants.ACTION_NAME_STRUCTURE_SELECT_NEXT + StructuredTextEditorActionConstants.UNDERSCORE);
		fStructureSelectNextAction.setActionDefinitionId(ActionDefinitionIds.STRUCTURE_SELECT_NEXT);

		fStructureSelectPreviousAction = new RetargetTextEditorAction(resourceBundle, StructuredTextEditorActionConstants.ACTION_NAME_STRUCTURE_SELECT_PREVIOUS + StructuredTextEditorActionConstants.UNDERSCORE);
		fStructureSelectPreviousAction.setActionDefinitionId(ActionDefinitionIds.STRUCTURE_SELECT_PREVIOUS);

		fStructureSelectHistoryAction = new RetargetTextEditorAction(resourceBundle, StructuredTextEditorActionConstants.ACTION_NAME_STRUCTURE_SELECT_HISTORY + StructuredTextEditorActionConstants.UNDERSCORE);
		fStructureSelectHistoryAction.setActionDefinitionId(ActionDefinitionIds.STRUCTURE_SELECT_HISTORY);

		fExpandSelectionToMenu = new MenuManager(SSEUIMessages.ExpandSelectionToMenu_label); //$NON-NLS-1$
		fExpandSelectionToMenu.add(fStructureSelectEnclosingAction);
		fExpandSelectionToMenu.add(fStructureSelectNextAction);
		fExpandSelectionToMenu.add(fStructureSelectPreviousAction);
		fExpandSelectionToMenu.add(fStructureSelectHistoryAction);

		// source commands
		fShiftRight = new RetargetTextEditorAction(resourceBundle, ITextEditorActionConstants.SHIFT_RIGHT + StructuredTextEditorActionConstants.UNDERSCORE);
		fShiftRight.setActionDefinitionId(ITextEditorActionDefinitionIds.SHIFT_RIGHT);

		fShiftLeft = new RetargetTextEditorAction(resourceBundle, ITextEditorActionConstants.SHIFT_LEFT + StructuredTextEditorActionConstants.UNDERSCORE);
		fShiftLeft.setActionDefinitionId(ITextEditorActionDefinitionIds.SHIFT_LEFT);

		fToggleComment = new RetargetTextEditorAction(resourceBundle, StructuredTextEditorActionConstants.ACTION_NAME_TOGGLE_COMMENT + StructuredTextEditorActionConstants.UNDERSCORE);
		fToggleComment.setActionDefinitionId(ActionDefinitionIds.TOGGLE_COMMENT);

		fAddBlockComment = new RetargetTextEditorAction(resourceBundle, StructuredTextEditorActionConstants.ACTION_NAME_ADD_BLOCK_COMMENT + StructuredTextEditorActionConstants.UNDERSCORE);
		fAddBlockComment.setActionDefinitionId(ActionDefinitionIds.ADD_BLOCK_COMMENT);

		fRemoveBlockComment = new RetargetTextEditorAction(resourceBundle, StructuredTextEditorActionConstants.ACTION_NAME_REMOVE_BLOCK_COMMENT + StructuredTextEditorActionConstants.UNDERSCORE);
		fRemoveBlockComment.setActionDefinitionId(ActionDefinitionIds.REMOVE_BLOCK_COMMENT);

		// goto prev/next error
		// CMVC 249017 for JavaEditor consistancy
		fPreviousAnnotation = new GotoAnnotationAction("Previous_annotation", false); //$NON-NLS-1$
		fPreviousAnnotation.setActionDefinitionId("org.eclipse.ui.navigate.previous"); //$NON-NLS-1$

		fNextAnnotation = new GotoAnnotationAction("Next_annotation", true); //$NON-NLS-1$
		fNextAnnotation.setActionDefinitionId("org.eclipse.ui.navigate.next"); //$NON-NLS-1$

		fGotoMatchingBracketAction = new RetargetTextEditorAction(resourceBundle, StructuredTextEditorActionConstants.ACTION_NAME_GOTO_MATCHING_BRACKET + StructuredTextEditorActionConstants.UNDERSCORE);
		fGotoMatchingBracketAction.setActionDefinitionId(ActionDefinitionIds.GOTO_MATCHING_BRACKET);

		// Read action extensions.
		ExtendedEditorActionBuilder builder = new ExtendedEditorActionBuilder();
		extendedContributor = builder.readActionExtensions(getExtensionIDs());

		fMenuAdditionsGroupMarker = new GroupMarker(StructuredTextEditorActionConstants.GROUP_NAME_MENU_ADDITIONS);
		fToolbarSeparator = new Separator();
		fToolbarAdditionsGroupMarker = new GroupMarker(StructuredTextEditorActionConstants.GROUP_NAME_TOOLBAR_ADDITIONS);

		fToggleInsertModeAction = new RetargetTextEditorAction(resourceBundle, "Editor.ToggleInsertMode.", IAction.AS_CHECK_BOX); //$NON-NLS-1$
		fToggleInsertModeAction.setActionDefinitionId(ITextEditorActionDefinitionIds.TOGGLE_INSERT_MODE);

		if (_showDebugStatus) {
			fDebugStatusOffset = new OffsetStatusLineContributionItem(StructuredTextEditorActionConstants.STATUS_CATEGORY_OFFSET, true, 20);
		}
	}

	protected void addToMenu(IMenuManager menu) {
		// edit commands
		IMenuManager editMenu = menu.findMenuUsingPath(IWorkbenchActionConstants.M_EDIT);
		if (editMenu != null) {
			editMenu.add(fCommandsSeparator);
			editMenu.add(fToggleInsertModeAction);
			editMenu.add(fCommandsSeparator);
			editMenu.add(fExpandSelectionToMenu);
			editMenu.add(fCommandsSeparator);
			editMenu.add(fMenuAdditionsGroupMarker);
		}

		// source commands
		String sourceMenuLabel = SSEUIMessages.SourceMenu_label; //$NON-NLS-1$
		String sourceMenuId = "sourceMenuId"; // This is just a menu id. No //$NON-NLS-1$
		// need to translate.
		// //$NON-NLS-1$
		IMenuManager sourceMenu = new MenuManager(sourceMenuLabel, sourceMenuId);
		menu.insertAfter(IWorkbenchActionConstants.M_EDIT, sourceMenu);
		if (sourceMenu != null) {
			sourceMenu.add(fCommandsSeparator);
			sourceMenu.add(fToggleComment);
			sourceMenu.add(fAddBlockComment);
			sourceMenu.add(fRemoveBlockComment);
			sourceMenu.add(fShiftRight);
			sourceMenu.add(fShiftLeft);
		}
		
		IMenuManager gotoMenu = menu.findMenuUsingPath(IWorkbenchActionConstants.GO_TO);
		if (gotoMenu != null) {
			gotoMenu.add(fGotoMatchingBracketAction);
		}
	}

	protected void addToPopupMenu(IMenuManager menu) {
		// add nothing
	}

	protected void addToStatusLine(IStatusLineManager manager) {
		if (_showDebugStatus) {
			manager.add(fDebugStatusOffset);
		}
	}

	protected void addToToolBar(IToolBarManager toolBarManager) {
		toolBarManager.add(fToolbarSeparator);
		toolBarManager.add(fToolbarAdditionsGroupMarker);
	}

	/**
	 * @see org.eclipse.ui.part.EditorActionBarContributor#contributeToMenu(IMenuManager)
	 */
	public void contributeToMenu(IMenuManager menu) {
		super.contributeToMenu(menu);

		addToMenu(menu);

		if (extendedContributor != null) {
			extendedContributor.contributeToMenu(menu);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.wst.sse.ui.extension.IPopupMenuContributor#contributeToPopupMenu(org.eclipse.jface.action.IMenuManager)
	 */
	public void contributeToPopupMenu(IMenuManager menu) {

		addToPopupMenu(menu);

		if (extendedContributor != null) {
			extendedContributor.contributeToPopupMenu(menu);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.part.EditorActionBarContributor#contributeToStatusLine(org.eclipse.jface.action.IStatusLineManager)
	 */
	public void contributeToStatusLine(IStatusLineManager manager) {
		super.contributeToStatusLine(manager);

		addToStatusLine(manager);

		if (extendedContributor != null) {
			extendedContributor.contributeToStatusLine(manager);
		}
	}

	/**
	 * @see org.eclipse.ui.part.EditorActionBarContributor#contributeToToolBar(IToolBarManager)
	 */
	public void contributeToToolBar(IToolBarManager toolBarManager) {
		super.contributeToToolBar(toolBarManager);

		addToToolBar(toolBarManager);

		if (extendedContributor != null) {
			extendedContributor.contributeToToolBar(toolBarManager);
		}
	}

	/**
	 * @see org.eclipse.ui.part.EditorActionBarContributor#dispose()
	 */
	public void dispose() {
		// need to call setActiveEditor before super.dispose because in both
		// setActiveEditor & super.setActiveEditor if getEditorPart ==
		// activeEditor,
		// the method is just returned. so to get both methods to run,
		// setActiveEditor
		// needs to be called so that it correctly calls super.setActiveEditor
		setActiveEditor(null);

		super.dispose();

		if (extendedContributor != null)
			extendedContributor.dispose();
	}

	protected String[] getExtensionIDs() {
		return EDITOR_IDS;
	}

	/**
	 * @param editor
	 * @return
	 */
	protected ITextEditor getTextEditor(IEditorPart editor) {
		ITextEditor textEditor = null;
		if (editor instanceof ITextEditor)
			textEditor = (ITextEditor) editor;
		if (textEditor == null && editor != null)
			textEditor = (ITextEditor) editor.getAdapter(ITextEditor.class);
		return textEditor;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.IEditorActionBarContributor#init(org.eclipse.ui.IActionBars,
	 *      org.eclipse.ui.IWorkbenchPage)
	 */
	public void init(IActionBars bars, IWorkbenchPage page) {
		super.init(bars, page);
	}

	/**
	 * @see org.eclipse.ui.IEditorActionBarContributor#setActiveEditor(IEditorPart)
	 */
	public void setActiveEditor(IEditorPart activeEditor) {
		if (getActiveEditorPart() == activeEditor)
			return;
		super.setActiveEditor(activeEditor);

		ITextEditor textEditor = getTextEditor(activeEditor);

		IActionBars actionBars = getActionBars();
		if (actionBars != null) {
			actionBars.setGlobalActionHandler(ITextEditorActionDefinitionIds.GOTO_NEXT_ANNOTATION, fNextAnnotation);
			actionBars.setGlobalActionHandler(ITextEditorActionDefinitionIds.GOTO_PREVIOUS_ANNOTATION, fPreviousAnnotation);
			actionBars.setGlobalActionHandler(ActionFactory.PREVIOUS.getId(), fPreviousAnnotation);
			actionBars.setGlobalActionHandler(ActionFactory.NEXT.getId(), fNextAnnotation);

			if (textEditor != null) {
				actionBars.setGlobalActionHandler(IDEActionFactory.ADD_TASK.getId(), getAction(textEditor, IDEActionFactory.ADD_TASK.getId()));
				actionBars.setGlobalActionHandler(IDEActionFactory.BOOKMARK.getId(), getAction(textEditor, IDEActionFactory.BOOKMARK.getId()));
			}
		}

		fStructureSelectEnclosingAction.setAction(getAction(textEditor, StructuredTextEditorActionConstants.ACTION_NAME_STRUCTURE_SELECT_ENCLOSING));
		fStructureSelectNextAction.setAction(getAction(textEditor, StructuredTextEditorActionConstants.ACTION_NAME_STRUCTURE_SELECT_NEXT));
		fStructureSelectPreviousAction.setAction(getAction(textEditor, StructuredTextEditorActionConstants.ACTION_NAME_STRUCTURE_SELECT_PREVIOUS));
		fStructureSelectHistoryAction.setAction(getAction(textEditor, StructuredTextEditorActionConstants.ACTION_NAME_STRUCTURE_SELECT_HISTORY));

		fShiftRight.setAction(getAction(textEditor, ITextEditorActionConstants.SHIFT_RIGHT));
		fShiftLeft.setAction(getAction(textEditor, ITextEditorActionConstants.SHIFT_LEFT));

		fToggleComment.setAction(getAction(textEditor, StructuredTextEditorActionConstants.ACTION_NAME_TOGGLE_COMMENT));
		fAddBlockComment.setAction(getAction(textEditor, StructuredTextEditorActionConstants.ACTION_NAME_ADD_BLOCK_COMMENT));
		fRemoveBlockComment.setAction(getAction(textEditor, StructuredTextEditorActionConstants.ACTION_NAME_REMOVE_BLOCK_COMMENT));

		// go to prev/next error
		// CMVC 249017 for JavaEditor consistancy
		fPreviousAnnotation.setEditor(textEditor);
		fNextAnnotation.setEditor(textEditor);
		fGotoMatchingBracketAction.setAction(getAction(textEditor, StructuredTextEditorActionConstants.ACTION_NAME_GOTO_MATCHING_BRACKET));

		fToggleInsertModeAction.setAction(getAction(textEditor, ITextEditorActionConstants.TOGGLE_INSERT_MODE));

		if (extendedContributor != null) {
			extendedContributor.setActiveEditor(activeEditor);
		}

		if (_showDebugStatus && textEditor instanceof ITextEditorExtension) {
			((ITextEditorExtension) textEditor).setStatusField(fDebugStatusOffset, StructuredTextEditorActionConstants.STATUS_CATEGORY_OFFSET);
			fDebugStatusOffset.setActiveEditor(textEditor);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.wst.sse.ui.ISourceViewerActionBarContributor#setViewerSpecificContributionsEnabled(boolean)
	 */
	public void setViewerSpecificContributionsEnabled(boolean enabled) {
		fShiftRight.setEnabled(enabled);
		fShiftLeft.setEnabled(enabled);
		fNextAnnotation.setEnabled(enabled);
		fPreviousAnnotation.setEnabled(enabled);

		/*
		 * fComment.setEnabled(enabled); fUncomment.setEnabled(enabled);
		 */
		fToggleComment.setEnabled(enabled);
		fAddBlockComment.setEnabled(enabled);
		fRemoveBlockComment.setEnabled(enabled);
		// convert line delimiters are not source viewer-specific
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.wst.sse.ui.extension.IExtendedContributor#updateToolbarActions()
	 */
	public void updateToolbarActions() {
		if (extendedContributor != null) {
			extendedContributor.updateToolbarActions();
		}
	}
}