diff options
Diffstat (limited to 'jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dnd/internal/SourceViewerDragDropHelper.java')
| -rw-r--r-- | jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dnd/internal/SourceViewerDragDropHelper.java | 394 |
1 files changed, 0 insertions, 394 deletions
diff --git a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dnd/internal/SourceViewerDragDropHelper.java b/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dnd/internal/SourceViewerDragDropHelper.java deleted file mode 100644 index dc44b1155..000000000 --- a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dnd/internal/SourceViewerDragDropHelper.java +++ /dev/null @@ -1,394 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2006 Sybase, Inc. 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: - * Sybase, Inc. - initial API and implementation - *******************************************************************************/ -package org.eclipse.jst.pagedesigner.dnd.internal; - -import org.eclipse.gef.SharedCursors; -import org.eclipse.jface.text.BadLocationException; -import org.eclipse.jface.text.IRegion; -import org.eclipse.jface.text.TextViewer; -import org.eclipse.jface.text.source.ISourceViewer; -import org.eclipse.jst.pagedesigner.dom.EditModelQuery; -import org.eclipse.jst.pagedesigner.dom.EditValidateUtil; -import org.eclipse.jst.pagedesigner.dom.IDOMPosition; -import org.eclipse.swt.SWT; -import org.eclipse.swt.custom.ST; -import org.eclipse.swt.custom.StyledText; -import org.eclipse.swt.graphics.Color; -import org.eclipse.swt.graphics.Cursor; -import org.eclipse.swt.graphics.GC; -import org.eclipse.swt.graphics.Point; -import org.eclipse.swt.graphics.Rectangle; -import org.eclipse.swt.widgets.Caret; -import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel; -import org.eclipse.wst.sse.core.internal.provisional.IndexedRegion; -import org.eclipse.wst.sse.ui.StructuredTextEditor; -import org.eclipse.wst.xml.core.internal.contentmodel.modelquery.ModelQuery; -import org.eclipse.wst.xml.core.internal.modelquery.ModelQueryUtil; -import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode; -import org.w3c.dom.Document; -import org.w3c.dom.Node; - -/** - * This class will 1. determine it's insertion or update 2. call validator - * corresponding helper to resolve it. - * - * @author mengbo - */ -public final class SourceViewerDragDropHelper { - private static SourceViewerDragDropHelper _instance; - - /** - * @return the singleton instance - */ - public static SourceViewerDragDropHelper getInstance() { - if (_instance == null) { - _instance = new SourceViewerDragDropHelper(); - } - return _instance; - } - - private SourceViewerDragDropHelper() - { - // singleton, no external instantiation - } - - private Point toControl(TextViewer textViewer, Point point) { - return (textViewer != null ? textViewer.getTextWidget() - .toControl(point) : point); - } - - private int getDropOffset(StructuredTextEditor ste, Point pt) { - StyledText st = ste.getTextViewer().getTextWidget(); - int offset = st.getCaretOffset(); - try { - offset = st.getOffsetAtLocation(pt); - } catch (IllegalArgumentException e) { - boolean found = false; - Point p = new Point((pt.x > 0 ? pt.x : 0), pt.y); - // search nearest character - for (; p.x > -1; p.x--) { - try { - offset = st.getOffsetAtLocation(p); - - /* - * Now that a valid offset has been found, try to place at - * the end of the line - */ - if (ste.getTextViewer() != null - && ste.getTextViewer().getDocument() != null) { - IRegion lineInfo = null; - try { - lineInfo = ste.getTextViewer().getDocument() - .getLineInformationOfOffset(offset); - } catch (BadLocationException e1) { - // ignore exception and fall-through with lineInfo == null - } - if (lineInfo != null) - offset = lineInfo.getOffset() - + lineInfo.getLength(); - } - - found = true; - break; - } catch (IllegalArgumentException ex) { - // for trying location, no need to catch. - } - } - if (!found) { - offset = st.getCharCount(); - } - } - return offset; - } - - /** - * @param textEditor - * @param location - * @param caret - */ - public void updateCaret(StructuredTextEditor textEditor, Point location, - Point caret) { - TextViewer textViewer = textEditor.getTextViewer(); - if (textViewer != null) { - Point pt = toControl(textViewer, location); - StyledText st = textViewer.getTextWidget(); - - // auto scroll - Rectangle ca = st.getClientArea(); - int margin = st.getLineHeight(); - - if (pt.y < margin) { // up - st.invokeAction(ST.LINE_UP); - } else if (pt.y > ca.height - margin) { // down - st.invokeAction(ST.LINE_DOWN); - } - - // draw insertion point - int offset = getDropOffset(textEditor, pt); - if (offset != st.getCaretOffset()) { - st.setCaretOffset(offset); - st.setSelection(offset); - } - - Point newCaret = st.getLocationAtOffset(offset); - if (newCaret.equals(caret)) { - return; - } - - Caret ct = st.getCaret(); - Point size = ct.getSize(); - - GC gc = new GC(st); - //gc.setXORMode(true); - gc.setLineWidth(size.x); - - // erase old caret - if (caret != null) { - Color originalForeground = gc.getForeground(); - gc.setForeground(st.getBackground()); - gc.drawLine(caret.x, caret.y, caret.x, caret.y + size.y); - gc.setForeground(originalForeground); - } - - st.redraw(); - st.update(); - - // draw new caret - if (caret == null) { - caret = newCaret; - } else { - caret.x = newCaret.x; - caret.y = newCaret.y; - } - if (ct.getImage() != null) { - gc.drawImage(ct.getImage(), caret.x, caret.y); - } else { - gc.drawLine(caret.x, caret.y, caret.x, caret.y + size.y); - } - - gc.dispose(); - } - } - - /** - * @param textEditor - * @param location - */ - public void updateCaret(StructuredTextEditor textEditor, Point location) { - TextViewer textViewer = textEditor.getTextViewer(); - if (textViewer != null) { - Point pt = toControl(textViewer, location); - StyledText st = textViewer.getTextWidget(); - - // auto scroll - Rectangle ca = st.getClientArea(); - int margin = st.getLineHeight(); - - if (pt.y < margin) { // up - st.invokeAction(ST.LINE_UP); - } else if (pt.y > ca.height - margin) { // down - st.invokeAction(ST.LINE_DOWN); - } - - // draw insertion point - int offset = getDropOffset(textEditor, pt); - if (offset != st.getCaretOffset()) { - st.setCaretOffset(offset); - st.setSelection(offset); - } - } - } - - /** - * @param textEditor - * @param location - * @return the caret offset - */ - public int showCaret(StructuredTextEditor textEditor, int location) { - StyledText text = textEditor.getTextViewer().getTextWidget(); - text.setCursor(SharedCursors.CURSOR_TREE_ADD); - text.setCaretOffset(location); - if (!text.isFocusControl()) { - text.setFocus(); - } - return text.getCaretOffset(); - } - - /** - * @param node - * @return the model query for the node or null if not available - */ - protected ModelQuery getModelQuery(Node node) { - if (node.getNodeType() == Node.DOCUMENT_NODE) { - return ModelQueryUtil.getModelQuery((Document) node); - } - return ModelQueryUtil.getModelQuery(node.getOwnerDocument()); - } - - /** - * @param caretPos - * @param element - * @return the position - */ - public IDOMPosition findPosition(int caretPos, Node element) { - EditValidateUtil.validNode(element); - IDOMPosition position = EditModelQuery.getInstance().createDomposition( - ((IDOMNode) element).getModel(), caretPos, false); - return position; - } - - /** - * @param viewer - * @param node - */ - public void format(TextViewer viewer, Node node) { - if (node == null) { - return; - } - Node tmp; - int start, offset; - if (node.getPreviousSibling() != null) { - tmp = node.getPreviousSibling(); - start = ((IndexedRegion) tmp).getEndOffset(); - } else { - tmp = node; - start = ((IndexedRegion) tmp).getStartOffset(); - } - if (node.getNextSibling() != null) { - tmp = node.getNextSibling(); - offset = ((IndexedRegion) tmp).getStartOffset() - start; - } else { - tmp = node; - offset = ((IndexedRegion) tmp).getEndOffset() - start; - } - viewer.setSelectedRange(start, offset); - viewer.doOperation(ISourceViewer.FORMAT); - } - - /** - * @param textEditor - * @param reset - */ - public void changeCaret(StructuredTextEditor textEditor, boolean reset) { - if (reset) { - StyledText text = textEditor.getTextViewer().getTextWidget(); - text.setCursor(new Cursor(null, SWT.CURSOR_IBEAM)); - } - } - - /** - * @param textEditor - * @param locationOffset - * @return the location offset - */ - /*package*/ int getValidLocation(StructuredTextEditor textEditor, - int locationOffset) { - Node node = getCaretNode(textEditor, locationOffset); - if (node == null) { - // empty page? - return 0; - } - if (node.getNodeType() == Node.TEXT_NODE) { - return locationOffset; - } - return calculateCaretLocation(node, locationOffset); - } - - /** - * @param textEditor - * @param location - * @return the offset - */ - public int getOffset(StructuredTextEditor textEditor, Point location) { - StyledText text = textEditor.getTextViewer().getTextWidget(); - return text.getOffsetAtLocation(location); - } - - // private IStructuredModel getModel(StructuredTextEditor textEditor) - // { - // IStructuredModel model = null; - // if (textEditor.getDocumentProvider() != null) - // { - // if (textEditor.getDocumentProvider() instanceof IModelProvider) - // { - // model = ((IModelProvider) - // textEditor.getDocumentProvider()).getModel(textEditor.getEditorInput()); - // } - // else - // { - // IDocument doc = - // textEditor.getDocumentProvider().getDocument(textEditor.getEditorInput()); - // if (doc instanceof IDocument) - // { - // model = - // StructuredModelManager.getModelManager().getExistingModelForEdit(doc); - // if (model == null) - // { - // model = - // StructuredModelManager.getModelManager().getExistingModelForEdit((IDocument) - // doc); - // } - // } - // } - // } - // return model; - // } - - /** - * @param textEditor - * @param pos - * @return the node - */ - private Node getCaretNode(StructuredTextEditor textEditor, int pos) { - // TODO: getModel is deprecated - IStructuredModel model = textEditor.getModel(); - // getModel(textEditor); - if (model == null) { - return null; - } - IndexedRegion inode = model.getIndexedRegion(pos); - if (inode == null) { - inode = model.getIndexedRegion(pos - 1); - } - return (inode instanceof Node) ? (Node) inode : null; - } - - /** - * Calculate and adjust the location in compare with Node. - * - * @param node - * @param location - * @return the location - */ - public int calculateCaretLocation(Node node, int location) { - int pos[][] = new int[2][2]; - pos[0][0] = EditModelQuery.getNodeStartIndex(node); - pos[0][1] = EditModelQuery.getNodeStartNameEndIndex(node); - pos[1][0] = EditModelQuery.getNodeEndNameStartIndex(node); - pos[1][1] = EditModelQuery.getNodeEndIndex(node); - if (pos[0][0] >= location || pos[1][0] == location - || pos[1][1] <= location) { - return location; - } else if (pos[0][0] <= location && pos[0][1] >= location) { - if (((pos[0][1] + pos[0][0]) / 2) >= location) { - return pos[0][0]; - } - return pos[0][1]; - } else if (pos[1][0] <= location && pos[1][1] >= location) { - if (((pos[1][1] + pos[1][0]) / 2) >= location) { - return pos[1][0]; - } - return pos[1][1]; - } - return location; - } -} |