* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
-
package net.sourceforge.phpeclipse.phpeditor;
+import java.util.HashMap;
+import java.util.Map;
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.IRegion;
import org.eclipse.jface.text.ITextOperationTarget;
import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.jface.text.ITypedRegion;
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.TextUtilities;
+import org.eclipse.jface.text.source.ISourceViewer;
+import org.eclipse.jface.text.source.SourceViewerConfiguration;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.widgets.Display;
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.
+ * An action which toggles comment prefixes on the selected lines.
*
* @since 3.0
*/
public final class ToggleCommentAction extends TextEditorAction {
-
+
/** The text operation target */
private ITextOperationTarget fOperationTarget;
+
+ /** The document partitioning */
+ private String fDocumentPartitioning;
+
/** The comment prefixes */
- private String[] fCommentPrefixes;
-
+ private Map fPrefixesMap;
+
/**
* 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
+ *
+ * @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(ResourceBundle, String, int)
*/
- public ToggleCommentAction(ResourceBundle bundle, String prefix, ITextEditor editor, String[] commentPrefixes) {
+ public ToggleCommentAction(ResourceBundle bundle, String prefix,
+ ITextEditor editor) {
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.
+ * Implementation of the <code>IAction</code> prototype. Checks if the
+ * selected lines are all commented or not and uncomments/comments them
+ * respectively.
*/
public void run() {
- if (fOperationTarget == null)
+ if (fOperationTarget == null || fDocumentPartitioning == null
+ || fPrefixesMap == null)
return;
-
- ITextEditor editor= getTextEditor();
- if (!(editor instanceof PHPEditor))
+
+ ITextEditor editor = getTextEditor();
+ if (editor == null)
return;
if (!validateEditorInputState())
return;
-
+
final int operationCode;
if (isSelectionCommented(editor.getSelectionProvider().getSelection()))
- operationCode= ITextOperationTarget.STRIP_PREFIX;
+ operationCode = ITextOperationTarget.STRIP_PREFIX;
else
- operationCode= ITextOperationTarget.PREFIX;
-
- Shell shell= editor.getSite().getShell();
+ 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")); //$NON-NLS-1$ //$NON-NLS-2$
+ 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();
-
+
+ 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
+ *
+ * @param selection
+ * Selection to check
+ * @return <code>true</code> iff all selected lines are commented
*/
private boolean isSelectionCommented(ISelection selection) {
if (!(selection instanceof ITextSelection))
return false;
-
- ITextSelection ts= (ITextSelection) selection;
- if (ts.getStartLine() < 0 || ts.getEndLine() < 0)
+
+ ITextSelection textSelection = (ITextSelection) selection;
+ if (textSelection.getStartLine() < 0 || textSelection.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);
- }
+
+ IDocument document = getTextEditor().getDocumentProvider().getDocument(
+ getTextEditor().getEditorInput());
+
+ try {
+
+ IRegion block = getTextBlockFromSelection(textSelection, document);
+ ITypedRegion[] regions = TextUtilities.computePartitioning(
+ document, fDocumentPartitioning, block.getOffset(), block
+ .getLength(), false);
+
+ int lineCount = 0;
+ int[] lines = new int[regions.length * 2]; // [startline, endline,
+ // startline, endline,
+ // ...]
+ for (int i = 0, j = 0; i < regions.length; i++, j += 2) {
+ // start line of region
+ lines[j] = getFirstCompleteLineOfRegion(regions[i], document);
+ // end line of region
+ int length = regions[i].getLength();
+ int offset = regions[i].getOffset() + length;
+ if (length > 0)
+ offset--;
+ lines[j + 1] = (lines[j] == -1 ? -1 : document
+ .getLineOfOffset(offset));
+ lineCount += lines[j + 1] - lines[j] + 1;
}
- return false;
+
+ // Perform the check
+ for (int i = 0, j = 0; i < regions.length; i++, j += 2) {
+ String[] prefixes = (String[]) fPrefixesMap.get(regions[i]
+ .getType());
+ if (prefixes != null && prefixes.length > 0 && lines[j] >= 0
+ && lines[j + 1] >= 0)
+ if (!isBlockCommented(lines[j], lines[j + 1], prefixes,
+ document))
+ return false;
+ }
+
+ return true;
+
+ } catch (BadLocationException x) {
+ // should not happen
+ PHPeclipsePlugin.log(x);
+ }
+
+ return false;
+ }
+
+ /**
+ * Creates a region describing the text block (something that starts at the
+ * beginning of a line) completely containing the current selection.
+ *
+ * @param selection
+ * The selection to use
+ * @param document
+ * The document
+ * @return the region describing the text block comprising the given
+ * selection
+ */
+ private IRegion getTextBlockFromSelection(ITextSelection selection,
+ IDocument document) {
+
+ try {
+ IRegion line = document.getLineInformationOfOffset(selection
+ .getOffset());
+ int length = selection.getLength() == 0 ? line.getLength()
+ : selection.getLength()
+ + (selection.getOffset() - line.getOffset());
+ return new Region(line.getOffset(), length);
+
+ } catch (BadLocationException x) {
+ // should not happen
+ PHPeclipsePlugin.log(x);
}
- return true;
+
+ return null;
+ }
+
+ /**
+ * Returns the index of the first line whose start offset is in the given
+ * text range.
+ *
+ * @param region
+ * the text range in characters where to find the line
+ * @param document
+ * The document
+ * @return the first line whose start index is in the given range, -1 if
+ * there is no such line
+ */
+ private int getFirstCompleteLineOfRegion(IRegion region, IDocument document) {
+
+ try {
+
+ int startLine = document.getLineOfOffset(region.getOffset());
+
+ int offset = document.getLineOffset(startLine);
+ if (offset >= region.getOffset())
+ return startLine;
+
+ offset = document.getLineOffset(startLine + 1);
+ return (offset > region.getOffset() + region.getLength() ? -1
+ : startLine + 1);
+
+ } catch (BadLocationException x) {
+ // should not happen
+ PHPeclipsePlugin.log(x);
+ }
+
+ return -1;
+ }
+
+ /**
+ * Determines whether each line is prefixed by one of the prefixes.
+ *
+ * @param startLine
+ * Start line in document
+ * @param endLine
+ * End line in document
+ * @param prefixes
+ * Possible comment prefixes
+ * @param document
+ * The document
+ * @return <code>true</code> iff each line from <code>startLine</code>
+ * to and including <code>endLine</code> is prepended by one of
+ * the <code>prefixes</code>, ignoring whitespace at the begin of
+ * line
+ */
+ private boolean isBlockCommented(int startLine, int endLine,
+ String[] prefixes, IDocument document) {
+
+ try {
+
+ // check for occurrences of prefixes in the given lines
+ for (int i = startLine; i <= endLine; i++) {
+
+ IRegion line = document.getLineInformation(i);
+ String text = document.get(line.getOffset(), line.getLength());
+
+ int[] found = TextUtilities.indexOf(prefixes, text, 0);
+
+ if (found[0] == -1)
+ // found a line which is not commented
+ return false;
+
+ String s = document.get(line.getOffset(), found[0]);
+ s = s.trim();
+ if (s.length() != 0)
+ // found a line which is not commented
+ return false;
+
+ }
+
+ return true;
+
+ } catch (BadLocationException x) {
+ // should not happen
+ PHPeclipsePlugin.log(x);
+ }
+
+ return false;
}
/**
*/
public void update() {
super.update();
-
+
if (!canModifyEditor()) {
setEnabled(false);
return;
}
-
- ITextEditor editor= getTextEditor();
+
+ 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));
+ 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;
+ fOperationTarget = null;
+ }
+
+ public void configure(ISourceViewer sourceViewer,
+ SourceViewerConfiguration configuration) {
+ fPrefixesMap = null;
+
+ String[] types = configuration.getConfiguredContentTypes(sourceViewer);
+ Map prefixesMap = new HashMap(types.length);
+ for (int i = 0; i < types.length; i++) {
+ String type = types[i];
+ String[] prefixes = configuration.getDefaultPrefixes(sourceViewer,
+ type);
+ if (prefixes != null && prefixes.length > 0) {
+ int emptyPrefixes = 0;
+ for (int j = 0; j < prefixes.length; j++)
+ if (prefixes[j].length() == 0)
+ emptyPrefixes++;
+
+ if (emptyPrefixes > 0) {
+ String[] nonemptyPrefixes = new String[prefixes.length
+ - emptyPrefixes];
+ for (int j = 0, k = 0; j < prefixes.length; j++) {
+ String prefix = prefixes[j];
+ if (prefix.length() != 0) {
+ nonemptyPrefixes[k] = prefix;
+ k++;
+ }
+ }
+ prefixes = nonemptyPrefixes;
+ }
+
+ prefixesMap.put(type, prefixes);
+ }
+ }
+ fDocumentPartitioning = configuration
+ .getConfiguredDocumentPartitioning(sourceViewer);
+ fPrefixesMap = prefixesMap;
}
}
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