/*******************************************************************************
* Copyright (c) 2009 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
*******************************************************************************/
//------------------------------------------------------------------------------
// Copyright (c) 2005, 2007 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 implementation
//------------------------------------------------------------------------------
package org.eclipse.epf.richtext.actions;
import java.io.File;
import java.net.URL;
import java.util.Stack;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.epf.common.serviceability.Logger;
import org.eclipse.epf.common.ui.util.ClipboardUtil;
import org.eclipse.epf.common.utils.FileUtil;
import org.eclipse.epf.common.utils.NetUtil;
import org.eclipse.epf.richtext.IRichText;
import org.eclipse.epf.richtext.RichTextCommand;
import org.eclipse.epf.richtext.RichTextEditor;
import org.eclipse.epf.richtext.RichTextImages;
import org.eclipse.epf.richtext.RichTextPlugin;
import org.eclipse.epf.richtext.RichTextResources;
import org.eclipse.jface.action.IAction;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.HTMLTransfer;
import org.eclipse.swt.widgets.Display;
/**
* Pastes text from the clipboard onto a rich text control.
*
* @author Kelvin Low
* @since 1.0
*/
public class PasteAction extends RichTextAction {
private static final String SOURCE_URL = "SourceURL:"; //$NON-NLS-1$
private static final String HTM_EXT = ".htm"; //$NON-NLS-1$
private static final String HTML_EXT = ".html"; //$NON-NLS-1$
private static final Pattern HREF_REFERENCES = Pattern
.compile(
"href\\s*=\\s*\"(.*?)\"", Pattern.CASE_INSENSITIVE | Pattern.DOTALL); //$NON-NLS-1$
protected static final Pattern p_image_ref = Pattern
.compile(
"(<(img|iframe).*?src\\s*=\\s*\")(.*?)(\")", Pattern.CASE_INSENSITIVE | Pattern.DOTALL); //$NON-NLS-1$
protected static String sourceURLStr = ""; //$NON-NLS-1$
private Logger logger;
private static String RESOURCES = "resources"; //$NON-NLS-1$
/**
* Creates a new instance.
*/
public PasteAction(IRichText richText) {
super(richText, IAction.AS_PUSH_BUTTON);
setImageDescriptor(RichTextImages.IMG_DESC_PASTE);
setDisabledImageDescriptor(RichTextImages.DISABLED_IMG_DESC_PASTE);
setToolTipText(RichTextResources.pasteAction_toolTipText);
logger = RichTextPlugin.getDefault().getLogger();
}
/**
* Returns <code>true</code> if this action should be disabled when the
* rich text editor is in source edit mode.
*/
public boolean disableInSourceMode() {
return false;
}
/**
* Executes the action.
*
* @param richText
* a rich text control
*/
public void execute(IRichText richText) {
if (richText != null) {
copyLinkResources(richText);
if (richText instanceof RichTextEditor
&& ((RichTextEditor) richText).isHTMLTabSelected()) {
StyledText styledText = ((RichTextEditor) richText)
.getSourceEdit();
styledText.paste();
} else {
richText.executeCommand(RichTextCommand.PASTE, sourceURLStr);
}
}
}
/**
* Copies the link resources.
*
* @param richText
* a rich text control
*/
protected void copyLinkResources(IRichText richText) {
try {
sourceURLStr = ClipboardUtil.getHTMLSourceURL();
Clipboard clipboard = new Clipboard(Display.getCurrent());
String html = (String) clipboard.getContents(HTMLTransfer
.getInstance());
if (html != null && html.length() > 0) {
String basePath = richText.getBasePath();
URL sourceURL = null;
if (sourceURLStr == null || sourceURLStr.length() == 0
|| sourceURLStr.equals("about:blank")) { //$NON-NLS-1$
sourceURL = richText.getCopyURL();
} else {
sourceURL = new URL(sourceURLStr);
}
Matcher matcher = HREF_REFERENCES.matcher(html);
while (matcher.find()) {
String href = NetUtil.decodeURL(matcher.group(1));
try {
URL hrefURL = new URL(sourceURL, href);
String scheme = hrefURL.getProtocol();
if (scheme != null
&& scheme
.equalsIgnoreCase(NetUtil.FILE_SCHEME)) {
String url = hrefURL.getPath();
File srcFile = new File(NetUtil.decodeURL(url));
File tgtFile = null;
File tgtDir = null;
if (href.startsWith("#") || sourceURL.sameFile(hrefURL)) { //$NON-NLS-1$
continue;
} else if (href.startsWith(RESOURCES) || href.startsWith("./" + RESOURCES)) { //$NON-NLS-1$
tgtFile = new File(basePath, href);
tgtDir = tgtFile.getParentFile();
} else {
String resPath = getSubdirectoryOfResources(href);
tgtFile = new File(basePath + RESOURCES, resPath);
tgtDir = tgtFile;
}
tgtDir.mkdirs();
FileUtil.copyFile(srcFile, tgtDir);
}
} catch (Exception e) {
logger.logError(e);
}
}
matcher = p_image_ref.matcher(html);
while (matcher.find()) {
String src = NetUtil.decodeURL(matcher.group(3));
try {
URL srcURL = new URL(sourceURL, src);
String scheme = srcURL.getProtocol();
if (scheme != null
&& scheme.equalsIgnoreCase(NetUtil.FILE_SCHEME)) {
File srcFile = null;
String authority = srcURL.getAuthority();
if (authority != null) {
srcFile = new File(NetUtil.decodeURL(authority + srcURL.getPath()));
} else {
srcFile = new File(NetUtil.decodeURL(srcURL.getPath()));
}
File tgtFile = null;
File tgtDir = null;
if (src.startsWith(RESOURCES) || src.startsWith("./" + RESOURCES)) { //$NON-NLS-1$
tgtFile = new File(basePath, src);
tgtDir = tgtFile.getParentFile();
} else {
String resPath = getSubdirectoryOfResources(src);
tgtFile = new File(basePath + RESOURCES, resPath);
tgtDir = tgtFile;
}
tgtDir.mkdirs();
FileUtil.copyFile(srcFile, tgtDir);
}
} catch (Exception e) {
logger.logError(e);
}
}
}
} catch (Exception e) {
logger.logError(e);
}
}
/**
* Parses the given HTML content from the clipboard and returns the source
* URL.
*
* @param htmlContent
* the HTML content from the clipboard
* @return the source URL or <code>null</code>
*/
protected String getSourceURL(String htmlContent) {
String sourceURL = null;
int sourceURLIndex = htmlContent.indexOf(SOURCE_URL);
if (sourceURLIndex > 0) {
sourceURL = htmlContent.substring(sourceURLIndex
+ SOURCE_URL.length());
sourceURL = sourceURL.substring(0, sourceURL
.indexOf(FileUtil.LINE_SEP));
if (sourceURL.toLowerCase().endsWith(HTM_EXT)
|| sourceURL.toLowerCase().endsWith(HTML_EXT)) {
sourceURL = sourceURL.substring(0, sourceURL.indexOf(FileUtil
.getFileName(sourceURL)) - 1);
sourceURL = sourceURL.replace('\\', '/');
}
sourceURL = FileUtil.appendSeparator(sourceURL, "/"); //$NON-NLS-1$
}
return sourceURL;
}
protected String getSubdirectoryOfResources(String path) {
String result = ""; //$NON-NLS-1$
int res_idx = path.indexOf(RESOURCES);
if (res_idx != -1) {
Stack<String> stack = new Stack<String>();
File relative = new File(path).getParentFile();
while (!relative.getName().equals(RESOURCES)) {
stack.push(relative.getName());
relative = relative.getParentFile();
}
while (!stack.isEmpty()) {
result = result + (String)stack.pop() + File.separator;
}
}
return result;
}
}