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/*
* (c) Copyright IBM Corp. 2000, 2002.
* All Rights Reserved.
*/
package org.eclipse.help.ui.internal.browser;
import java.io.*;
import org.eclipse.core.runtime.IPath;
import org.eclipse.help.internal.util.Logger;
import org.eclipse.help.ui.browser.IBrowser;
import org.eclipse.help.ui.internal.WorkbenchHelpPlugin;
import org.eclipse.help.ui.internal.util.*;
import org.eclipse.swt.widgets.Display;
/**
* Browser adapter for browsers supporting
* -remote openURL command line option
* i.e. Mozilla and Netscape.
*/
public class MozillaBrowserAdapter implements IBrowser {
// delay that it takes mozilla to start responding
// to remote command after mozilla has been called
private static final int DELAY = 5000;
private long browserFullyOpenedAt = 0;
private BrowserThread lastBrowserThread = null;
private int x, y;
private int width, height;
private boolean setLocationPending = false;
private boolean setSizePending = false;
private String executable;
private String executableName;
private Thread uiThread;
/**
* Constructor
* @executable executable filename to launch
* @executableName name of the program to display when error occurs
*/
MozillaBrowserAdapter(String executable, String executableName) {
this.uiThread = Thread.currentThread();
this.executable = executable;
this.executableName = executableName;
}
/*
* @see IBrowser#close()
*/
public void close() {
}
/*
* @see IBrowser#displayURL(String)
*/
public void displayURL(String url) {
if (lastBrowserThread != null)
lastBrowserThread.exitRequested = true;
if (setLocationPending || setSizePending) {
url = createPositioningURL(url);
}
lastBrowserThread = new BrowserThread(url);
lastBrowserThread.start();
setLocationPending = false;
setSizePending = false;
}
/*
* @see IBrowser#isCloseSupported()
*/
public boolean isCloseSupported() {
return false;
}
/*
* @see IBrowser#isSetLocationSupported()
*/
public boolean isSetLocationSupported() {
return true;
}
/*
* @see IBrowser#isSetSizeSupported()
*/
public boolean isSetSizeSupported() {
return true;
}
/*
* @see IBrowser#setLocation(int, int)
*/
public void setLocation(int x, int y) {
this.x = x;
this.y = y;
setLocationPending = true;
}
/*
* @see IBrowser#setSize(int, int)
*/
public void setSize(int width, int height) {
this.width = width;
this.height = height;
setSizePending = true;
}
private synchronized String createPositioningURL(String url) {
IPath pluginPath = WorkbenchHelpPlugin.getDefault().getStateLocation();
File outFile =
pluginPath
.append("mozillaPositon")
.append("position.html")
.toFile();
try {
outFile.getParentFile().mkdirs();
PrintWriter writer =
new PrintWriter(
new BufferedWriter(
new OutputStreamWriter(
new FileOutputStream(outFile),
"UTF8")),
false);
writer.println(
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">");
writer.println("<html><head>");
writer.println(
"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\">");
writer.print("<title></title><script language=\"JavaScript\">");
if (setSizePending)
writer.print("window.resizeTo(" + width + "," + height + ");");
if (setLocationPending)
writer.print("window.moveTo(" + x + "," + y + ");");
writer.print("location.replace(\"" + url + "\");");
writer.print("</script></head><body>");
writer.print("<a href=\"" + url + "\">--></a>");
writer.print("</body></html>");
writer.close();
return "file://" + outFile.getAbsolutePath();
} catch (IOException ioe) {
// return the original url
return url;
}
}
private class BrowserThread extends Thread {
public boolean exitRequested = false;
private String url;
public BrowserThread(String urlName) {
this.url = urlName;
}
private int openBrowser(String browserCmd) {
try {
Process pr = Runtime.getRuntime().exec(browserCmd);
(new StreamConsumer(pr.getInputStream())).start();
(new StreamConsumer(pr.getErrorStream())).start();
pr.waitFor();
return pr.exitValue();
} catch (InterruptedException e) {
} catch (IOException e) {
Logger.logError(
WorkbenchResources.getString(
"MozillaBrowserAdapter.executeFailed",
executableName),
e);
try {
Display.findDisplay(uiThread).asyncExec(new Runnable() {
public void run() {
ErrorUtil.displayErrorDialog(
WorkbenchResources.getString(
"MozillaBrowserAdapter.executeFailed",
executableName));
}
});
} catch (Exception e2) {
}
// return success so second command does not execute
return 0;
}
return -1;
}
public void run() {
// If browser is opening, wait until it fully opens,
waitForBrowser();
if (exitRequested)
return;
//workaround for bug 23750, mozilla bug 159092
// instead of simply -remote openURL(" + url + ")", call a javascript
if (openBrowser(executable
+ " -remote openURL(javascript:window.focus();window.location=\'"
+ url
+ "\')")
== 0) {
return;
}
if (exitRequested)
return;
browserFullyOpenedAt = System.currentTimeMillis() + DELAY;
openBrowser(executable + " " + url);
}
private void waitForBrowser() {
while (System.currentTimeMillis() < browserFullyOpenedAt)
try {
if (exitRequested)
return;
Thread.sleep(100);
} catch (InterruptedException ie) {
}
}
}
}
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