core/com.nokia.carbide.discovery.ui/src/com/nokia/carbide/internal/discovery/ui/extension/AbstractRSSPortalPageLayer.java
More portal framework changes:
support for page command bars in page extension
ordering across layers on page
abstract discovery UI pages
improvements to open editor asap and defer updates if needed
/*
* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of the License "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
package com.nokia.carbide.internal.discovery.ui.extension;
import java.net.URL;
import java.text.MessageFormat;
import java.util.LinkedHashSet;
import java.util.Set;
import java.util.regex.Pattern;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import com.nokia.carbide.discovery.ui.Activator;
import com.nokia.carbide.discovery.ui.Messages;
import com.nokia.carbide.internal.discovery.ui.editor.SimpleRSSReader;
import com.nokia.carbide.internal.discovery.ui.editor.SimpleRSSReader.Channel;
import com.nokia.carbide.internal.discovery.ui.editor.SimpleRSSReader.Item;
import com.nokia.carbide.internal.discovery.ui.editor.SimpleRSSReader.Rss;
public abstract class AbstractRSSPortalPageLayer extends AbstractBrowserPortalPageLayer {
private static final String[] EXCLUDE_TAGS = {
"object", //$NON-NLS-1$
"param", //$NON-NLS-1$
"embed", //$NON-NLS-1$
"script", //$NON-NLS-1$
"img" //$NON-NLS-1$
};
private static final Pattern[] EXCLUDE_TAG_PATTERNS = new Pattern[EXCLUDE_TAGS.length * 2];
static {
int i = 0;
for (String tagString : EXCLUDE_TAGS) {
StringBuilder sb = new StringBuilder();
sb.append('<');
sb.append(tagString);
sb.append(" .*</"); //$NON-NLS-1$
sb.append(tagString);
sb.append('>');
EXCLUDE_TAG_PATTERNS[i++] =
Pattern.compile(sb.toString(),
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE);
}
for (String tagString : EXCLUDE_TAGS) {
StringBuilder sb = new StringBuilder();
sb.append('<');
sb.append(tagString);
sb.append(" .*/>"); //$NON-NLS-1$
EXCLUDE_TAG_PATTERNS[i++] =
Pattern.compile(sb.toString(),
Pattern.CASE_INSENSITIVE | Pattern.MULTILINE);
}
}
private static final String HTML_BODY_HEADER = "<html><head><title></title><style type=\"text/css\">div.item {font-family : sans-serif; font-size : 12px; margin-bottom : 16px;} div.itemBody {padding-top : 3px; padding-bottom : 3px;} div.itemInfo {background-color : #EEEEEE; color : #333333;} div.feedflare {display: none;} a.itemTitle {font-size : 12px; font-weight : bold;} a.markItemRead {font-size : 10px; color : #333333;}</style></head><body>"; //$NON-NLS-1$
private static final String HTML_BODY_FOOTER = "</body></html>"; //$NON-NLS-1$
private static final int MAX_ELEM_LEN = 256;
private Rss rss;
@Override
public void init() {
Activator.runInUIThreadWhenProxyDataSet(browser, new Runnable() {
@Override
public void run() {
URL url = getURL();
if (url != null) {
try {
rss = SimpleRSSReader.readRSS(url);
displayRSS();
actionBar.hookBrowser();
} catch (Exception e) {
Activator.logError(MessageFormat.format(Messages.AbstractRSSPortalPageLayer_RSSReadError, url), e);
}
actionBar.update();
}
}
});
}
private void displayRSS() {
StringBuffer buf = new StringBuffer();
buf.append(HTML_BODY_HEADER);
for (Channel channel : rss.getChannels()) {
buf.append("<div class=\"channel\"><a class=\"channelName\" href=\""); //$NON-NLS-1$
buf.append(channel.getLink().toString());
buf.append("\">"); //$NON-NLS-1$
buf.append(clean(channel.getTitle()));
buf.append("</a>"); //$NON-NLS-1$
buf.append("<div class=\"channelBody\">"); //$NON-NLS-1$
buf.append(clean(channel.getDescription()));
buf.append("</div><br>"); //$NON-NLS-1$
buf.append("<ul>"); //$NON-NLS-1$
for (Item item : channel.getItems()) {
buf.append("<li><div class=\"item\"><a class=\"itemTitle\" href=\""); //$NON-NLS-1$
buf.append(item.getLink().toString());
buf.append("\">"); //$NON-NLS-1$
buf.append(clean(item.getTitle()));
buf.append("</a>"); //$NON-NLS-1$
buf.append("<div class=\"itemBody\">"); //$NON-NLS-1$
buf.append(clean(item.getDescription()));
buf.append("</div></li>"); //$NON-NLS-1$
}
buf.append("</ul>"); //$NON-NLS-1$
}
buf.append(HTML_BODY_FOOTER);
System.out.println(buf.toString());
browser.setText(buf.toString());
}
private String clean(String s) {
for (Pattern pattern : EXCLUDE_TAG_PATTERNS) {
s = pattern.matcher(s).replaceAll(""); //$NON-NLS-1$
}
return s.length() > MAX_ELEM_LEN ? s.substring(0, MAX_ELEM_LEN) : s;
}
@Override
public void dispose() {
}
@Override
protected Set<IAction> makeActions() {
Set<IAction> actions = new LinkedHashSet<IAction>();
for (IAction action : super.makeActions()) {
if (action.getText().equals(Messages.AbstractBrowserPortalPage_RefreshLabel)) {
IAction a = new Action(Messages.AbstractBrowserPortalPage_RefreshLabel) {
@Override
public void run() {
if (browser != null) {
if (browserHasURL())
browser.refresh();
else
displayRSS();
actionBar.update();
}
}
@Override
public boolean isEnabled() {
return browser != null ? !actionBar.isLoading() : false;
}
};
actions.add(a);
}
else
actions.add(action);
}
actions.add(new Action(Messages.AbstractRSSPortalPageLayer_ReturnToFeedLabel) {
@Override
public void run() {
displayRSS();
actionBar.update();
}
@Override
public boolean isEnabled() {
return browserHasURL();
}
});
return actions;
}
}