--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+package net.sourceforge.phpeclipse.phpeditor;
+
+import java.util.ResourceBundle;
+
+import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.ITextOperationTarget;
+import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.swt.custom.BusyIndicator;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.texteditor.ITextEditor;
+import org.eclipse.ui.texteditor.ResourceAction;
+import org.eclipse.ui.texteditor.TextEditorAction;
+
+
+
+/**
+ * An action which toggles the single line comment prefixes on the selected lines.
+ *
+ * @since 3.0
+ */
+public final class ToggleCommentAction extends TextEditorAction {
+
+ /** The text operation target */
+ private ITextOperationTarget fOperationTarget;
+ /** The comment prefixes */
+ private String[] fCommentPrefixes;
+
+ /**
+ * Creates and initializes the action for the given text editor. The action
+ * configures its visual representation from the given resource bundle.
+ *
+ * @param bundle the resource bundle
+ * @param prefix a prefix to be prepended to the various resource keys
+ * (described in <code>ResourceAction</code> constructor), or
+ * <code>null</code> if none
+ * @param editor the text editor
+ * @see ResourceAction#ResourceAction
+ */
+ public ToggleCommentAction(ResourceBundle bundle, String prefix, ITextEditor editor, String[] commentPrefixes) {
+ super(bundle, prefix, editor);
+ fCommentPrefixes= commentPrefixes;
+ }
+
+ /**
+ * Implementation of the <code>IAction</code> prototype. Checks if the selected
+ * lines are all commented or not and uncomment/comments them respectively.
+ */
+ public void run() {
+ if (fOperationTarget == null)
+ return;
+
+ ITextEditor editor= getTextEditor();
+ if (!(editor instanceof PHPEditor))
+ return;
+
+ if (!validateEditorInputState())
+ return;
+
+ final int operationCode;
+ if (isSelectionCommented(editor.getSelectionProvider().getSelection()))
+ operationCode= ITextOperationTarget.STRIP_PREFIX;
+ else
+ operationCode= ITextOperationTarget.PREFIX;
+
+ Shell shell= editor.getSite().getShell();
+ if (!fOperationTarget.canDoOperation(operationCode)) {
+ if (shell != null)
+ MessageDialog.openError(shell, PHPEditorMessages.getString("ToggleComment.error.title"), PHPEditorMessages.getString("ToggleComment.error.message")); //$NON-NLS-1$ //$NON-NLS-2$
+ return;
+ }
+
+ Display display= null;
+ if (shell != null && !shell.isDisposed())
+ display= shell.getDisplay();
+
+ BusyIndicator.showWhile(display, new Runnable() {
+ public void run() {
+ fOperationTarget.doOperation(operationCode);
+ }
+ });
+ }
+
+ /**
+ * Is the given selection single-line commented?
+ *
+ * @param selection Selection to check
+ * @return <code>true</code> iff all selected lines are single-line commented
+ */
+ private boolean isSelectionCommented(ISelection selection) {
+ if (!(selection instanceof ITextSelection))
+ return false;
+
+ ITextSelection ts= (ITextSelection) selection;
+ if (ts.getStartLine() < 0 || ts.getEndLine() < 0)
+ return false;
+
+ IDocument document= getTextEditor().getDocumentProvider().getDocument(getTextEditor().getEditorInput());
+ OUTER: for (int i= ts.getStartLine(); i <= ts.getEndLine(); i++) {
+ for (int j= 0; j < fCommentPrefixes.length; j++) {
+ try {
+ if (fCommentPrefixes[j].length() == 0)
+ continue;
+ String s= document.get(document.getLineOffset(i), document.getLineLength(i));
+ int index= s.indexOf(fCommentPrefixes[j]);
+ if (index >= 0 && s.substring(0, index).trim().length() == 0)
+ continue OUTER;
+ } catch (BadLocationException e) {
+ // should not happen
+ PHPeclipsePlugin.log(e);
+ }
+ }
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * Implementation of the <code>IUpdate</code> prototype method discovers
+ * the operation through the current editor's
+ * <code>ITextOperationTarget</code> adapter, and sets the enabled state
+ * accordingly.
+ */
+ public void update() {
+ super.update();
+
+ if (!canModifyEditor()) {
+ setEnabled(false);
+ return;
+ }
+
+ ITextEditor editor= getTextEditor();
+ if (fOperationTarget == null && editor != null)
+ fOperationTarget= (ITextOperationTarget) editor.getAdapter(ITextOperationTarget.class);
+
+ boolean isEnabled= (fOperationTarget != null && fOperationTarget.canDoOperation(ITextOperationTarget.PREFIX) && fOperationTarget.canDoOperation(ITextOperationTarget.STRIP_PREFIX));
+ setEnabled(isEnabled);
+ }
+
+ /*
+ * @see TextEditorAction#setEditor(ITextEditor)
+ */
+ public void setEditor(ITextEditor editor) {
+ super.setEditor(editor);
+ fOperationTarget= null;
+ }
+}
git://secure.phpeclipse.com / phpeclipse.git / blobdiff