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- Add check to open WelcomeScreen based on hash of loaded page content

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10297 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
This commit is contained in:
nor..67 2013-02-01 15:58:25 +00:00
parent d5d9cdded1
commit caac42e97e
1 changed files with 56 additions and 8 deletions
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64
sdk/jme3-welcome-screen/src/com/jme3/gde/welcome/WelcomeScreenTopComponent.java
View File

@ -4,7 +4,9 @@
*/
package com.jme3.gde.welcome;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.logging.Level;
@ -14,7 +16,6 @@ import javax.swing.event.HyperlinkListener;
import org.netbeans.api.settings.ConvertAsProperties;
import org.openide.awt.ActionID;
import org.openide.awt.ActionReference;
import org.openide.awt.HtmlBrowser.URLDisplayer;
import org.openide.util.Exceptions;
import org.openide.util.HelpCtx;
import org.openide.windows.TopComponent;
@ -32,7 +33,7 @@ autostore = false)
@TopComponent.Description(
preferredID = "WelcomeScreenTopComponent",
//iconBase="SET/PATH/TO/ICON/HERE",
persistenceType = TopComponent.PERSISTENCE_NEVER)
persistenceType = TopComponent.PERSISTENCE_ALWAYS)
@TopComponent.Registration(mode = "editor", openAtStartup = true)
@ActionID(category = "Window", id = "com.jme3.gde.welcome.WelcomeScreenTopComponent")
@ActionReference(path = "Menu/Window" /*, position = 333 */)
@ -64,12 +65,11 @@ public final class WelcomeScreenTopComponent extends TopComponent implements Hyp
public void loadPage() {
try {
URL startUrl = new URL(org.openide.util.NbBundle.getMessage(WelcomeScreenTopComponent.class, "WelcomeScreenTopComponent.http.link"));
URLConnection conn = startUrl.openConnection();
long lastMod = conn.getLastModified();
long lastMod = getModified(startUrl);
NbPreferences.forModule(getClass()).putLong("LAST_PAGE_UPDATE", lastMod);
jEditorPane1.setPage(startUrl);
} catch (IOException ex) {
logger.log(Level.INFO, "Loading page failed", ex);
logger.log(Level.INFO, "Loading welcome page from web failed", ex);
try {
jEditorPane1.setPage(new URL(org.openide.util.NbBundle.getMessage(WelcomeScreenTopComponent.class, "WelcomeScreenTopComponent.local.link")));
} catch (IOException ex1) {
@ -79,12 +79,17 @@ public final class WelcomeScreenTopComponent extends TopComponent implements Hyp
}
public static void checkOpen() {
checkOpen(0);
}
public static void checkOpen(long lastMod) {
try {
long lastCheck = NbPreferences.forModule(WelcomeScreenTopComponent.class).getLong("LAST_PAGE_UPDATE", 0);
URL startUrl = new URL(org.openide.util.NbBundle.getMessage(WelcomeScreenTopComponent.class, "WelcomeScreenTopComponent.http.link"));
URLConnection conn = startUrl.openConnection();
long lastMod = conn.getLastModified();
logger.log(Level.FINE, "Checking page time {0} vs stored time {1}", new Object[]{lastMod, lastCheck});
if (lastMod == 0) {
lastMod = getModified(startUrl);
}
logger.log(Level.INFO, "Checking page id {0} vs stored id {1}", new Object[]{lastMod, lastCheck});
if (lastCheck != lastMod) {
WelcomeScreenTopComponent tc = (WelcomeScreenTopComponent) WindowManager.getDefault().findTopComponent("WelcomeScreenTopComponent");
if (tc != null) {
@ -117,6 +122,49 @@ public final class WelcomeScreenTopComponent extends TopComponent implements Hyp
}
}
private static long getModified(URL url) {
try {
URLConnection conn = url.openConnection();
long lastMod = conn.getLastModified();
if (lastMod != 0) {
logger.log(Level.INFO, "Found getLastModified of {0}", lastMod);
return lastMod;
} else {
logger.log(Level.INFO, "Returning hash code of content", lastMod);
String content = getContent(conn);
return content.hashCode();
}
} catch (IOException ex) {
logger.log(Level.INFO, "Loading welcome page modified date from web failed", ex);
}
return 0;
}
private static String getContent(URLConnection connection) {
BufferedReader in = null;
try {
in = new BufferedReader(
new InputStreamReader(
connection.getInputStream()));
StringBuilder response = new StringBuilder();
String inputLine;
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
return response.toString();
} catch (IOException ex) {
logger.log(Level.INFO, "Reading welcome page content from web failed", ex);
} finally {
try {
in.close();
} catch (IOException ex) {
logger.log(Level.INFO, "Closing reader for welcome page content from web failed", ex);
}
}
return "";
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always