diff options
Diffstat (limited to 'bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/htmlcss/StyleElementAdapter.java')
| -rw-r--r-- | bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/htmlcss/StyleElementAdapter.java | 452 |
1 files changed, 0 insertions, 452 deletions
diff --git a/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/htmlcss/StyleElementAdapter.java b/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/htmlcss/StyleElementAdapter.java deleted file mode 100644 index 3ef97b9cc9..0000000000 --- a/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/htmlcss/StyleElementAdapter.java +++ /dev/null @@ -1,452 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2004-2006 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 - * - * Masaki Saitoh (MSAITOH@jp.ibm.com) - * See Bug 153000 Style Adapters should be lazier - * https://bugs.eclipse.org/bugs/show_bug.cgi?id=153000 - * - ********************************************************************************/ -package org.eclipse.wst.html.core.internal.htmlcss; - - - -import org.eclipse.wst.css.core.internal.provisional.adapters.IModelProvideAdapter; -import org.eclipse.wst.css.core.internal.provisional.adapters.IStyleSheetListAdapter; -import org.eclipse.wst.css.core.internal.provisional.document.ICSSModel; -import org.eclipse.wst.html.core.internal.provisional.HTML40Namespace; -import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier; -import org.eclipse.wst.sse.core.internal.provisional.events.IStructuredDocumentListener; -import org.eclipse.wst.sse.core.internal.provisional.events.NewDocumentEvent; -import org.eclipse.wst.sse.core.internal.provisional.events.NoChangeEvent; -import org.eclipse.wst.sse.core.internal.provisional.events.RegionChangedEvent; -import org.eclipse.wst.sse.core.internal.provisional.events.RegionsReplacedEvent; -import org.eclipse.wst.sse.core.internal.provisional.events.StructuredDocumentRegionsReplacedEvent; -import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument; -import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion; -import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegionList; -import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel; -import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode; -import org.w3c.dom.Attr; -import org.w3c.dom.Document; -import org.w3c.dom.Element; -import org.w3c.dom.Node; - -/** - */ -public class StyleElementAdapter extends AbstractStyleSheetAdapter implements IStructuredDocumentListener { - - private boolean replaceModel = true; - private boolean ignoreNotification = false; - - /** - */ - protected StyleElementAdapter() { - super(); - } - - /** - * Preparation of applying changes from CSS sub-model to HTML model - */ - private void changeStructuredDocumentRegion(IStructuredDocumentRegion flatNode) { - if (flatNode == null) - return; - Element element = getElement(); - if (element == null) - return; - ICSSModel model = getExistingModel(); - if (model == null) - return; - IStructuredDocument structuredDocument = model.getStructuredDocument(); - if (structuredDocument == null) - return; - - // get old content length - Node child = element.getFirstChild(); - if (child == null || child.getNodeType() != Node.TEXT_NODE) - return; - IDOMNode content = (IDOMNode) child; - int oldLength = content.getEndOffset() - content.getStartOffset(); - - // get new content length - int newLength = 0; - IStructuredDocumentRegionList flatNodes = structuredDocument.getRegionList(); - if (flatNodes != null) { - int count = flatNodes.getLength(); - if (count > 0) { - IStructuredDocumentRegion last = flatNodes.item(count - 1); - if (last != null) - newLength = last.getEnd(); - } - } - - int offset = flatNode.getStart(); - int end = flatNode.getEnd(); - int diff = oldLength - newLength; - int length = end - offset + diff; - String data = flatNode.getText(); - - replaceData(offset, length, data); - } - - /** - * Apply changes from HTML model to CSS sub-model - */ - private void contentChanged() { - Element element = getElement(); - if (element == null) - return; - ICSSModel model = getExistingModel(); - if (model == null) - return; - IStructuredDocument structuredDocument = model.getStructuredDocument(); - if (structuredDocument == null) - return; - - String data = null; - Node child = element.getFirstChild(); - if (child != null && child.getNodeType() == Node.TEXT_NODE && child.getNextSibling() == null) { - data = child.getNodeValue(); - } - if (data == null) - data = "";//$NON-NLS-1$ - - // minimize replace range - int start = 0, end = 0; - String oldData = structuredDocument.get(); - if (oldData == null) - oldData = "";//$NON-NLS-1$ - - // search differenct character position from first - for (; start < oldData.length() && start < data.length(); start++) - if (oldData.charAt(start) != data.charAt(start)) - break; - - if (start == oldData.length() && start == data.length()) - return; // no change - else if (start == oldData.length()) { - structuredDocument.replaceText(getRequesterH2C(), start, 0, data.substring(start)); // append text to last - } - else if (start == data.length()) { - structuredDocument.replaceText(getRequesterH2C(), start, oldData.length() - start, ""); // remove text of last //$NON-NLS-1$ - } - else { - // search differenct character position from last - for (; start < oldData.length() - end && start < data.length() - end; end++) { - if (oldData.charAt(oldData.length() - end - 1) != data.charAt(data.length() - end - 1)) - break; - } - structuredDocument.replaceText(getRequesterH2C(), start, oldData.length() - end - start, data.substring(start, data.length() - end)); - } - - } - - /** - */ - public ICSSModel getModel() { - ICSSModel model = getExistingModel(); - if (this.replaceModel) { - ICSSModel oldModel = model; - model = createModel(false); - - setModel(model, false); // need to set before contentChanged() - contentChanged(); - - // from super.createModel() - // get ModelProvideAdapter - IModelProvideAdapter modelProvideAdapter = (IModelProvideAdapter) ((INodeNotifier) getElement()).getAdapterFor(IModelProvideAdapter.class); - // notify adapter - if (modelProvideAdapter != null) - modelProvideAdapter.modelProvided(model); - - // from createModel() - IStructuredDocument structuredDocument = model.getStructuredDocument(); - if (structuredDocument == null) - return null; - structuredDocument.addDocumentChangedListener(this); - - // from setModel() - if (oldModel != null) - oldModel.removeStyleListener(this); - if (model != null) - model.addStyleListener(this); - - if (oldModel != null) { - // get ModelProvideAdapter - IModelProvideAdapter adapter = (IModelProvideAdapter) ((INodeNotifier) getElement()).getAdapterFor(IModelProvideAdapter.class); - if (adapter != null) { - adapter.modelRemoved(oldModel); - } - } - - this.replaceModel = false; - } - return model; - } - - /** - */ - protected boolean isValidAttribute() { - Element element = getElement(); - if (element == null) { - return false; - } - String type = element.getAttribute(HTML40Namespace.ATTR_NAME_TYPE); - if (type != null && type.length() > 0 && !type.equalsIgnoreCase("text/css")) { //$NON-NLS-1$ - return false; - } - return true; - } - - /** - */ - protected ICSSModel createModel() { - return createModel(true); - } - - /** - */ - protected ICSSModel createModel(boolean addListener) { - if (!isValidAttribute()) { - return null; - } - - if (!addListener) - return super.createModel(false); - - ICSSModel model = super.createModel(); - IStructuredDocument structuredDocument = model.getStructuredDocument(); - if (structuredDocument == null) - return null; - structuredDocument.addDocumentChangedListener(this); - - return model; - } - - /** - */ - // public ICSSModel getModel() { - // ICSSModel model = getExistingModel(); - // if (model == null) { - // model = createModel(); - // if (model == null) return null; - // IStructuredDocument structuredDocument = model.getStructuredDocument(); - // if (structuredDocument == null) return null; - // structuredDocument.addModelChangedListener(this); - // setModel(model); // need to set before contentChanged() - // contentChanged(); - // } - // return model; - // } - /** - */ - private Object getRequesterH2C() { - return (getElement() != null && ((IDOMNode) getElement()).getModel() != null) ? (Object) ((IDOMNode) getElement()).getModel() : this; - } - - /** - */ - private Object getRequesterC2H() { - return (getModel() != null) ? (Object) getModel() : this; - } - - /** - * Implementing IStructuredDocumentListener's method - * Event from CSS Flat Model - */ - public void newModel(NewDocumentEvent event) { - if (event == null) - return; - if (event.getOriginalRequester() == getRequesterH2C()) - return; - IStructuredDocument structuredDocument = event.getStructuredDocument(); - if (structuredDocument == null) - return; - IStructuredDocumentRegionList flatNodes = structuredDocument.getRegionList(); - if (flatNodes == null) - return; - - replaceStructuredDocumentRegions(flatNodes, null); - } - - /** - * Implementing IStructuredDocumentListener's method - * Event from CSS Flat Model - */ - public void noChange(NoChangeEvent structuredDocumentEvent) { - } - - /** - * Implementing IStructuredDocumentListener's method - * Event from CSS Flat Model - */ - public void nodesReplaced(StructuredDocumentRegionsReplacedEvent event) { - if (event == null) - return; - if (event.getOriginalRequester() == getRequesterH2C()) - return; - IStructuredDocumentRegionList oldStructuredDocumentRegions = event.getOldStructuredDocumentRegions(); - IStructuredDocumentRegionList newStructuredDocumentRegions = event.getNewStructuredDocumentRegions(); - if (oldStructuredDocumentRegions == null && newStructuredDocumentRegions == null) - return; - - replaceStructuredDocumentRegions(newStructuredDocumentRegions, oldStructuredDocumentRegions); - } - - /** - * Overriding INodeAdapter's method - * Event from <STYLE> element - */ - public void notifyChanged(INodeNotifier notifier, int eventType, Object changedFeature, Object oldValue, Object newValue, int pos) { - if (this.ignoreNotification) - return; - - if (eventType == INodeNotifier.ADD || eventType == INodeNotifier.REMOVE || eventType == INodeNotifier.CONTENT_CHANGED) { - contentChanged(); - } - else if (eventType == INodeNotifier.CHANGE) { - Attr attr = (Attr) changedFeature; - if (attr == null) - return; - String name = attr.getName(); - if (name.equalsIgnoreCase("type")) { //$NON-NLS-1$ - this.replaceModel = true; - - Element element = getElement(); - if (element == null) { - return; - } - Document document = element.getOwnerDocument(); - if (document == null) { - return; - } - HTMLDocumentAdapter adapter = (HTMLDocumentAdapter) ((INodeNotifier) document).getAdapterFor(IStyleSheetListAdapter.class); - if (adapter != null) { - adapter.childReplaced(); - } - } - } - } - - /** - * Implementing IStructuredDocumentListener's method - * Event from CSS Flat Model - */ - public void regionChanged(RegionChangedEvent event) { - if (event == null) - return; - if (event.getOriginalRequester() == getRequesterH2C()) - return; - IStructuredDocumentRegion flatNode = event.getStructuredDocumentRegion(); - if (flatNode == null) - return; - - changeStructuredDocumentRegion(flatNode); - } - - /** - * Implementing IStructuredDocumentListener's method - * Event from CSS Flat Model - */ - public void regionsReplaced(RegionsReplacedEvent event) { - if (event == null) - return; - if (event.getOriginalRequester() == getRequesterH2C()) - return; - IStructuredDocumentRegion flatNode = event.getStructuredDocumentRegion(); - if (flatNode == null) - return; - - changeStructuredDocumentRegion(flatNode); - } - - /** - * Apply changes from CSS sub-model to HTML model - */ - private void replaceData(int offset, int length, String data) { - IDOMNode element = (IDOMNode) getElement(); - if (element == null) - return; - IDOMModel ownerModel = element.getModel(); - if (ownerModel == null) - return; - IStructuredDocument structuredDocument = ownerModel.getStructuredDocument(); - if (structuredDocument == null) - return; - IStructuredDocumentRegion flatNode = element.getStartStructuredDocumentRegion(); - if (flatNode == null) - return; - - int contentOffset = flatNode.getEndOffset(); - if (data == null) - data = "";//$NON-NLS-1$ - - this.ignoreNotification = true; - structuredDocument.replaceText(getRequesterC2H(), contentOffset + offset, length, data); - this.ignoreNotification = false; - } - - /** - * Preparation of applying changes from CSS sub-model to HTML model - */ - private void replaceStructuredDocumentRegions(IStructuredDocumentRegionList newStructuredDocumentRegions, IStructuredDocumentRegionList oldStructuredDocumentRegions) { - int offset = 0; - int length = 0; - if (oldStructuredDocumentRegions != null) { - int count = oldStructuredDocumentRegions.getLength(); - if (count > 0) { - IStructuredDocumentRegion first = oldStructuredDocumentRegions.item(0); - if (first != null) - offset = first.getStart(); - IStructuredDocumentRegion last = oldStructuredDocumentRegions.item(count - 1); - if (last != null) - length = last.getEnd() - offset; - } - } - String data = null; - if (newStructuredDocumentRegions != null) { - int count = newStructuredDocumentRegions.getLength(); - if (count > 0) { - StringBuffer buffer = new StringBuffer(); - for (int i = 0; i < count; i++) { - IStructuredDocumentRegion flatNode = newStructuredDocumentRegions.item(i); - if (flatNode == null) - continue; - buffer.append(flatNode.getText()); - if (i == 0) - offset = flatNode.getStart(); - } - data = buffer.toString(); - } - } - - replaceData(offset, length, data); - } - - /** - */ - protected void setModel(ICSSModel model) { - setModel(model, true); - } - - /** - */ - protected void setModel(ICSSModel model, boolean setupListener) { - ICSSModel oldModel = getExistingModel(); - if (model == oldModel) - return; - super.setModel(model); - if (!setupListener) - return; - if (oldModel != null) - oldModel.removeStyleListener(this); - if (model != null) - model.addStyleListener(this); - } -}
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