Update of /cvsroot/woproject/woproject/projects/wolips/plugins/org.objectstyle.wolips.htmlpreview/java/org/objectstyle/wolips/htmlpreview/editor
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv20221/java/org/objectstyle/wolips/htmlpreview/editor
Added Files:
HtmlPreviewEditor.java
Log Message:
html preview
--- NEW FILE: HtmlPreviewEditor.java ---
/*
* ====================================================================
*
* The ObjectStyle Group Software License, Version 1.0
*
* Copyright (c) 2005 The ObjectStyle Group and individual authors of the
* software. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met: 1.
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer. 2. Redistributions in
* binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution. 3. The end-user documentation
* included with the redistribution, if any, must include the following
* acknowlegement: "This product includes software developed by the ObjectStyle
* Group (http://objectstyle.org/)." Alternately, this acknowlegement may
* appear in the software itself, if and wherever such third-party
* acknowlegements normally appear. 4. The names "ObjectStyle Group" and
* "Cayenne" must not be used to endorse or promote products derived from this
* software without prior written permission. For written permission, please
* contact [email protected]. 5. Products derived from this software may
* not be called "ObjectStyle" nor may "ObjectStyle" appear in their names
* without prior written permission of the ObjectStyle Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* OBJECTSTYLE GROUP OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the ObjectStyle Group. For more information on the ObjectStyle
* Group, please see <http://objectstyle.org/> .
*
*/
package org.objectstyle.wolips.htmlpreview.editor;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorSite;
import org.eclipse.ui.IPropertyListener;
import org.eclipse.ui.IWorkbenchPartSite;
import org.eclipse.ui.PartInitException;
import org.eclipse.wst.html.core.internal.provisional.HTML40Namespace;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.core.internal.provisional.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
import org.objectstyle.wolips.components.editor.EditorInteraction;
import org.objectstyle.wolips.components.editor.IEmbeddedEditor;
import org.objectstyle.wolips.components.editor.IEmbeddedEditorSelected;
import org.objectstyle.wolips.htmlpreview.HtmlPreviewPlugin;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
/**
* based on an eclipse.org example
*
* @author uli
*/
public class HtmlPreviewEditor implements IEmbeddedEditor,
IEmbeddedEditorSelected, IEditorPart {
private EditorInteraction editorInteraction;
private IEditorSite site;
private IEditorInput input;
private Browser browser;
public HtmlPreviewEditor() {
super();
}
/**
* Update the contents of the Preview page
*/
private void updatePreviewContent() {
IDocument editDocument = editorInteraction.getHtmlDocumentProvider()
.getHtmlEditDocument();
IDocument htmlSource = new org.eclipse.jface.text.Document(editDocument
.get());
IStructuredModel editModel = null;
int insertOffset = 0;
List removalRegions = new ArrayList(2);
try {
editModel = StructuredModelManager.getModelManager()
.getExistingModelForRead(editDocument);
if (editModel != null && editModel instanceof IDOMModel) {
Document document = ((IDOMModel) editModel).getDocument();
// remove meta tags specifying encoding as required by Browser
// API
NodeList metaElements = document
.getElementsByTagName(HTML40Namespace.ElementName.META);
for (int i = 0; i < metaElements.getLength(); i++) {
IDOMElement meta = (IDOMElement) metaElements.item(i);
if (insertOffset == 0)
insertOffset = meta.getStartOffset();
insertOffset = Math.max(0, Math.min(insertOffset, meta
.getStartOffset()));
String attributeNameHttpEquiv = meta
.getAttribute(HTML40Namespace.ATTR_NAME_HTTP_EQUIV);
String attributeNameContent = meta
.getAttribute(HTML40Namespace.ATTR_NAME_CONTENT);
if (attributeNameHttpEquiv != null
&& attributeNameHttpEquiv.equals("Content-Type") && attributeNameContent != null && attributeNameContent.indexOf("charset") > 0) { //$NON-NLS-2$ //$NON-NLS-1$
if (meta.getStartStructuredDocumentRegion() != null)
removalRegions.add(meta
.getStartStructuredDocumentRegion());
if (meta.getEndStructuredDocumentRegion() != null)
removalRegions.add(meta
.getEndStructuredDocumentRegion());
}
}
// remove existing base elements with hrefs so we can add one
// for the local location
NodeList baseElements = document
.getElementsByTagName(HTML40Namespace.ElementName.BASE);
for (int i = 0; i < baseElements.getLength(); i++) {
IDOMElement base = (IDOMElement) baseElements.item(i);
if (insertOffset == 0)
insertOffset = base.getStartOffset();
insertOffset = Math.max(0, Math.min(insertOffset, base
.getStartOffset()));
if (base.getStartStructuredDocumentRegion() != null)
removalRegions.add(base
.getStartStructuredDocumentRegion());
if (base.getEndStructuredDocumentRegion() != null)
removalRegions.add(base
.getEndStructuredDocumentRegion());
}
}
for (int i = removalRegions.size() - 1; i >= 0; i--) {
IStructuredDocumentRegion region = (IStructuredDocumentRegion) removalRegions
.get(i);
try {
htmlSource.replace(region.getStartOffset(), region
.getEndOffset()
- region.getStartOffset(), ""); //$NON-NLS-1$
} catch (BadLocationException e1) {
HtmlPreviewPlugin.getDefault().log(e1);
}
}
if (insertOffset == 0) {
Document document = ((IDOMModel) editModel).getDocument();
NodeList headElements = document
.getElementsByTagName(HTML40Namespace.ElementName.HEAD);
if (headElements.getLength() > 0) {
IDOMElement head = (IDOMElement) headElements.item(0);
if (head.getStartStructuredDocumentRegion() != null) {
insertOffset = head.getStartStructuredDocumentRegion()
.getEndOffset();
} else {
insertOffset = head.getEndOffset();
}
}
}
} catch (Exception e) {
HtmlPreviewPlugin.getDefault().log(e);
} finally {
if (editModel != null)
editModel.releaseFromRead();
}
//
// String location = null;
// if (getEditorInput().getAdapter(IFile.class) != null) {
// location = "file:" + ((IFile)
// getEditorInput().getAdapter(IFile.class)).getLocation();
// //$NON-NLS-1$
// }
// else if (getEditorInput() instanceof ILocationProvider) {
// location = "file:" + ((ILocationProvider)
// getEditorInput()).getPath(getEditorInput()); //$NON-NLS-1$
// }
// else {
// location = "file:" +
// ResourcesPlugin.getWorkspace().getRoot().getLocation(); //$NON-NLS-1$
// }
//
// try {
// htmlSource.replace(insertOffset, 0, "<base href=\"" + location + "\"
// />"); //$NON-NLS-2$ //$NON-NLS-1$
// }
// catch (BadLocationException e1) {
// Logger.logException(e1);
// }
boolean rendered = browser.setText(htmlSource.get());
if (!rendered) {
HtmlPreviewPlugin.getDefault().log("Can't create preview");
}
}
public void initEditorInteraction(EditorInteraction editorInteraction) {
this.editorInteraction = editorInteraction;
}
public IEditorInput getEditorInput() {
return input;
}
public IEditorSite getEditorSite() {
return site;
}
public void init(IEditorSite site, IEditorInput input)
throws PartInitException {
this.site = site;
this.input = input;
}
public void addPropertyListener(IPropertyListener listener) {
// do nothing
}
public void createPartControl(Composite parent) {
browser = new Browser(parent, SWT.READ_ONLY);
}
public IWorkbenchPartSite getSite() {
return site;
}
public String getTitle() {
return null;
}
public Image getTitleImage() {
return null;
}
public String getTitleToolTip() {
return null;
}
public void removePropertyListener(IPropertyListener listener) {
// do nothing
}
public Object getAdapter(Class adapter) {
return null;
}
public void doSave(IProgressMonitor monitor) {
// do nothing
}
public void doSaveAs() {
// do nothing
}
public boolean isDirty() {
return false;
}
public boolean isSaveAsAllowed() {
return false;
}
public boolean isSaveOnCloseNeeded() {
return false;
}
public void dispose() {
browser.dispose();
}
public void setFocus() {
browser.setFocus();
}
public void editorSelected() {
updatePreviewContent();
}
}
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