examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/BrowserTab.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 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 API and implementation
  *******************************************************************************/
 package org.eclipse.swt.examples.controlexample;


 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;

 import org.eclipse.swt.*;
 import org.eclipse.swt.browser.*;
 import org.eclipse.swt.events.*;
 import org.eclipse.swt.layout.*;
 import org.eclipse.swt.widgets.*;

 class BrowserTab extends Tab {

 	/* Example widgets and groups that contain them */
 	Browser browser;
 	Group browserGroup;

 	/* Style widgets added to the "Style" group */
 	Button mozillaButton;

 	String errorMessage, lastText, lastUrl;

 	/**
 	 * Creates the Tab within a given instance of ControlExample.
 	 */
 	BrowserTab(ControlExample instance) {
 		super(instance);
 	}

 	void createBackgroundModeGroup () {
 		// Browser does not need a background mode group.
 	}

 	void createColorAndFontGroup () {
 		// Browser does not need a color and font group.
 	}

 	/**
 	 * Creates the "Example" group.
 	 */
 	void createExampleGroup () {
 		super.createExampleGroup ();

 		/* Create a group for the browser */
 		browserGroup = new Group (exampleGroup, SWT.NONE);
 		browserGroup.setLayout (new GridLayout ());
 		browserGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
 		browserGroup.setText ("Browser");
 	}

 	/**
 	 * Creates the "Example" widgets.
 	 */
 	void createExampleWidgets () {

 		/* Compute the widget style */
 		int style = getDefaultStyle();
 		if (borderButton.getSelection ()) style |= SWT.BORDER;
 		if (mozillaButton.getSelection ()) style |= SWT.MOZILLA;

 		/* Create the example widgets */
 		try {
 			browser = new Browser (browserGroup, style);
 		} catch (SWTError e) { //XPCOM error
 			try {
 				browser = new Browser (browserGroup, style &~ SWT.MOZILLA);
 			} catch (SWTError e2) { // Unsupported platform
 				errorMessage = e.getMessage();
 				return;
 			}
 			MessageBox dialog = new MessageBox(shell, SWT.ICON_WARNING | SWT.OK);
 			dialog.setMessage(ControlExample.getResourceString("MozillaNotFound", new String [] {e.getMessage()}));
 			dialog.open();
 		}

 		if (lastUrl != null) {
 			browser.setUrl(lastUrl);
 		} else if (lastText != null) {
 			browser.setText(lastText);
 		} else {
 	        InputStream htmlStream= ControlExample.class.getResourceAsStream("browser-content.html");
 			BufferedReader br= new BufferedReader(new InputStreamReader(htmlStream));
 			StringBuffer sb= new StringBuffer(300);
 			try {
 				int read= 0;
 				while ((read= br.read()) != -1)
 					sb.append((char) read);
 			} catch (IOException e) {
 				log(e.getMessage());
 			} finally {
 				try {
 					br.close();
 				} catch (IOException e) {
 					log(e.getMessage());
 				}
 			}
 			String text= sb.toString();
 			browser.setText(text);
 		}
 		lastText = lastUrl = null;
 	}

 	/**
 	 * Creates the "Other" group.  This is typically
 	 * a child of the "Control" group.
 	 */
 	void createOtherGroup () {
 		super.createOtherGroup ();
 		backgroundImageButton.dispose ();
 	}

 	/**
 	 * Creates the "Size" group.  The "Size" group contains
 	 * controls that allow the user to change the size of
 	 * the example widgets.
 	 */
 	void createSizeGroup () {
 		super.createSizeGroup ();

 		/* Set the default state for Browser to fill horizontally & vertically. */
 		fillHButton.setSelection (true);
 		fillVButton.setSelection (true);
 	}

 	/**
 	 * Creates the "Style" group.
 	 */
 	void createStyleGroup () {
 		super.createStyleGroup ();

 		/* Create the extra widgets */
 		mozillaButton = new Button (styleGroup, SWT.CHECK);
 		mozillaButton.setText ("SWT.MOZILLA");
 		borderButton = new Button (styleGroup, SWT.CHECK);
 		borderButton.setText ("SWT.BORDER");
 	}

 	/**
 	 * Creates the tab folder page.
 	 *
 	 * @param tabFolder org.eclipse.swt.widgets.TabFolder
 	 * @return the new page for the tab folder
 	 */
 	Composite createTabFolderPage (final TabFolder tabFolder) {
 		super.createTabFolderPage (tabFolder);

 		/*
 		 * Add a resize listener to the tabFolderPage so that
 		 * if the user types into the example widget to change
 		 * its preferred size, and then resizes the shell, we
 		 * recalculate the preferred size correctly.
 		 */
 		tabFolderPage.addControlListener(new ControlAdapter() {
 			public void controlResized(ControlEvent e) {
 				setExampleWidgetSize ();
 			}
 		});

 		/*
 		 * Add a selection listener to the tabFolder to bring up a
 		 * dialog if this platform does not support the Browser.
 		 */
 		tabFolder.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				if (errorMessage != null && tabFolder.getSelection()[0].getText().equals(getTabText())) {
 					MessageBox dialog = new MessageBox(shell, SWT.ICON_WARNING | SWT.OK);
 					dialog.setMessage(ControlExample.getResourceString("BrowserNotFound", new String [] {errorMessage}));
 					dialog.open();
 				}
 			}
 		});

 		return tabFolderPage;
 	}

 	/**
 	 * Disposes the "Example" widgets.
 	 */
 	void disposeExampleWidgets () {
 		/* store the state of the Browser if applicable */
 		if (browser != null) {
 			String url = browser.getUrl();
 			if (url.length() > 0 && !url.equals("about:blank")) { //$NON-NLS-1$
 				lastUrl = url;
 			} else {
 				String text = browser.getText();
 				if (text.length() > 0) {
 					lastText = text;
 				}
 			}
 		}
 		super.disposeExampleWidgets();
 	}

 	public static String getContents(InputStream in) throws IOException {
 		BufferedReader br= new BufferedReader(new InputStreamReader(in));

 		StringBuffer sb= new StringBuffer(300);
 		try {
 			int read= 0;
 			while ((read= br.read()) != -1)
 				sb.append((char) read);
 		} finally {
 			br.close();
 		}
 		return sb.toString();
 	}

 	/**
 	 * Gets the list of custom event names.
 	 *
 	 * @return an array containing custom event names
 	 */
 	String [] getCustomEventNames () {
 		return new String [] {"CloseWindowListener", "LocationListener", "OpenWindowListener",
 				"ProgressListener", "StatusTextListener", "TitleListener", "VisibilityWindowListener"};
 	}

 	/**
 	 * Gets the "Example" widget children.
 	 */
 	Widget [] getExampleWidgets () {
 		if (browser != null) return new Widget [] {browser};
 		return super.getExampleWidgets();
 	}

 	/**
 	 * Returns a list of set/get API method names (without the set/get prefix)
 	 * that can be used to set/get values in the example control(s).
 	 */
 	String[] getMethodNames() {
 		return new String[] {"Text", "Url", "ToolTipText"};
 	}

 	/**
 	 * Gets the text for the tab folder item.
 	 */
 	String getTabText () {
 		return "Browser";
 	}

 	/**
 	 * Hooks the custom listener specified by eventName.
 	 */
 	void hookCustomListener (final String eventName) {
 		if (browser == null) return;
 		if (eventName == "CloseWindowListener") {
 			browser.addCloseWindowListener (new CloseWindowListener () {
 				public void close(WindowEvent event) {
 					log (eventName, event);
 				}
 			});
 		}
 		if (eventName == "LocationListener") {
 			browser.addLocationListener (new LocationListener () {
 				public void changed(LocationEvent event) {
 					log (eventName + ".changed", event);
 				}
 				public void changing(LocationEvent event) {
 					log (eventName + ".changing", event);
 				}
 			});
 		}
 		if (eventName == "OpenWindowListener") {
 			browser.addOpenWindowListener (new OpenWindowListener () {
 				public void open(WindowEvent event) {
 					log (eventName, event);
 				}
 			});
 		}
 		if (eventName == "ProgressListener") {
 			browser.addProgressListener (new ProgressListener () {
 				public void changed(ProgressEvent event) {
 					log (eventName + ".changed", event);
 				}
 				public void completed(ProgressEvent event) {
 					log (eventName + ".completed", event);
 				}
 			});
 		}
 		if (eventName == "StatusTextListener") {
 			browser.addStatusTextListener (new StatusTextListener () {
 				public void changed(StatusTextEvent event) {
 					log (eventName, event);
 				}
 			});
 		}
 		if (eventName == "TitleListener") {
 			browser.addTitleListener (new TitleListener () {
 				public void changed(TitleEvent event) {
 					log (eventName, event);
 				}
 			});
 		}
 		if (eventName == "VisibilityWindowListener") {
 			browser.addVisibilityWindowListener (new VisibilityWindowListener () {
 				public void hide(WindowEvent event) {
 					log (eventName + ".hide", event);
 				}
 				public void show(WindowEvent event) {
 					log (eventName + ".show", event);
 				}
 			});
 		}
 	}

 	boolean rtlSupport() {
 		return false;
 	}

 	/**
 	 * Sets the state of the "Example" widgets.
 	 */
 	void setExampleWidgetState () {
 		super.setExampleWidgetState ();
 		mozillaButton.setSelection (browser == null ? false : (browser.getStyle () & SWT.MOZILLA) != 0);
 		borderButton.setSelection (browser == null ? false : (browser.getStyle () & SWT.BORDER) != 0);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 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 API and implementation
	*******************************************************************************/
	package org.eclipse.swt.examples.controlexample;


	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;

	import org.eclipse.swt.*;
	import org.eclipse.swt.browser.*;
	import org.eclipse.swt.events.*;
	import org.eclipse.swt.layout.*;
	import org.eclipse.swt.widgets.*;

	class BrowserTab extends Tab {

	/* Example widgets and groups that contain them */
	Browser browser;
	Group browserGroup;

	/* Style widgets added to the "Style" group */
	Button mozillaButton;

	String errorMessage, lastText, lastUrl;

	/**
	* Creates the Tab within a given instance of ControlExample.
	*/
	BrowserTab(ControlExample instance) {
	super(instance);
	}

	void createBackgroundModeGroup () {
	// Browser does not need a background mode group.
	}

	void createColorAndFontGroup () {
	// Browser does not need a color and font group.
	}

	/**
	* Creates the "Example" group.
	*/
	void createExampleGroup () {
	super.createExampleGroup ();

	/* Create a group for the browser */
	browserGroup = new Group (exampleGroup, SWT.NONE);
	browserGroup.setLayout (new GridLayout ());
	browserGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
	browserGroup.setText ("Browser");
	}

	/**
	* Creates the "Example" widgets.
	*/
	void createExampleWidgets () {

	/* Compute the widget style */
	int style = getDefaultStyle();
	if (borderButton.getSelection ()) style \|= SWT.BORDER;
	if (mozillaButton.getSelection ()) style \|= SWT.MOZILLA;

	/* Create the example widgets */
	try {
	browser = new Browser (browserGroup, style);
	} catch (SWTError e) { //XPCOM error
	try {
	browser = new Browser (browserGroup, style &~ SWT.MOZILLA);
	} catch (SWTError e2) { // Unsupported platform
	errorMessage = e.getMessage();
	return;
	}
	MessageBox dialog = new MessageBox(shell, SWT.ICON_WARNING \| SWT.OK);
	dialog.setMessage(ControlExample.getResourceString("MozillaNotFound", new String [] {e.getMessage()}));
	dialog.open();
	}

	if (lastUrl != null) {
	browser.setUrl(lastUrl);
	} else if (lastText != null) {
	browser.setText(lastText);
	} else {
	InputStream htmlStream= ControlExample.class.getResourceAsStream("browser-content.html");
	BufferedReader br= new BufferedReader(new InputStreamReader(htmlStream));
	StringBuffer sb= new StringBuffer(300);
	try {
	int read= 0;
	while ((read= br.read()) != -1)
	sb.append((char) read);
	} catch (IOException e) {
	log(e.getMessage());
	} finally {
	try {
	br.close();
	} catch (IOException e) {
	log(e.getMessage());
	}
	}
	String text= sb.toString();
	browser.setText(text);
	}
	lastText = lastUrl = null;
	}

	/**
	* Creates the "Other" group. This is typically
	* a child of the "Control" group.
	*/
	void createOtherGroup () {
	super.createOtherGroup ();
	backgroundImageButton.dispose ();
	}

	/**
	* Creates the "Size" group. The "Size" group contains
	* controls that allow the user to change the size of
	* the example widgets.
	*/
	void createSizeGroup () {
	super.createSizeGroup ();

	/* Set the default state for Browser to fill horizontally & vertically. */
	fillHButton.setSelection (true);
	fillVButton.setSelection (true);
	}

	/**
	* Creates the "Style" group.
	*/
	void createStyleGroup () {
	super.createStyleGroup ();

	/* Create the extra widgets */
	mozillaButton = new Button (styleGroup, SWT.CHECK);
	mozillaButton.setText ("SWT.MOZILLA");
	borderButton = new Button (styleGroup, SWT.CHECK);
	borderButton.setText ("SWT.BORDER");
	}

	/**
	* Creates the tab folder page.
	*
	* @param tabFolder org.eclipse.swt.widgets.TabFolder
	* @return the new page for the tab folder
	*/
	Composite createTabFolderPage (final TabFolder tabFolder) {
	super.createTabFolderPage (tabFolder);

	/*
	* Add a resize listener to the tabFolderPage so that
	* if the user types into the example widget to change
	* its preferred size, and then resizes the shell, we
	* recalculate the preferred size correctly.
	*/
	tabFolderPage.addControlListener(new ControlAdapter() {
	public void controlResized(ControlEvent e) {
	setExampleWidgetSize ();
	}
	});

	/*
	* Add a selection listener to the tabFolder to bring up a
	* dialog if this platform does not support the Browser.
	*/
	tabFolder.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	if (errorMessage != null && tabFolder.getSelection()[0].getText().equals(getTabText())) {
	MessageBox dialog = new MessageBox(shell, SWT.ICON_WARNING \| SWT.OK);
	dialog.setMessage(ControlExample.getResourceString("BrowserNotFound", new String [] {errorMessage}));
	dialog.open();
	}
	}
	});

	return tabFolderPage;
	}

	/**
	* Disposes the "Example" widgets.
	*/
	void disposeExampleWidgets () {
	/* store the state of the Browser if applicable */
	if (browser != null) {
	String url = browser.getUrl();
	if (url.length() > 0 && !url.equals("about:blank")) { //$NON-NLS-1$
	lastUrl = url;
	} else {
	String text = browser.getText();
	if (text.length() > 0) {
	lastText = text;
	}
	}
	}
	super.disposeExampleWidgets();
	}

	public static String getContents(InputStream in) throws IOException {
	BufferedReader br= new BufferedReader(new InputStreamReader(in));

	StringBuffer sb= new StringBuffer(300);
	try {
	int read= 0;
	while ((read= br.read()) != -1)
	sb.append((char) read);
	} finally {
	br.close();
	}
	return sb.toString();
	}

	/**
	* Gets the list of custom event names.
	*
	* @return an array containing custom event names
	*/
	String [] getCustomEventNames () {
	return new String [] {"CloseWindowListener", "LocationListener", "OpenWindowListener",
	"ProgressListener", "StatusTextListener", "TitleListener", "VisibilityWindowListener"};
	}

	/**
	* Gets the "Example" widget children.
	*/
	Widget [] getExampleWidgets () {
	if (browser != null) return new Widget [] {browser};
	return super.getExampleWidgets();
	}

	/**
	* Returns a list of set/get API method names (without the set/get prefix)
	* that can be used to set/get values in the example control(s).
	*/
	String[] getMethodNames() {
	return new String[] {"Text", "Url", "ToolTipText"};
	}

	/**
	* Gets the text for the tab folder item.
	*/
	String getTabText () {
	return "Browser";
	}

	/**
	* Hooks the custom listener specified by eventName.
	*/
	void hookCustomListener (final String eventName) {
	if (browser == null) return;
	if (eventName == "CloseWindowListener") {
	browser.addCloseWindowListener (new CloseWindowListener () {
	public void close(WindowEvent event) {
	log (eventName, event);
	}
	});
	}
	if (eventName == "LocationListener") {
	browser.addLocationListener (new LocationListener () {
	public void changed(LocationEvent event) {
	log (eventName + ".changed", event);
	}
	public void changing(LocationEvent event) {
	log (eventName + ".changing", event);
	}
	});
	}
	if (eventName == "OpenWindowListener") {
	browser.addOpenWindowListener (new OpenWindowListener () {
	public void open(WindowEvent event) {
	log (eventName, event);
	}
	});
	}
	if (eventName == "ProgressListener") {
	browser.addProgressListener (new ProgressListener () {
	public void changed(ProgressEvent event) {
	log (eventName + ".changed", event);
	}
	public void completed(ProgressEvent event) {
	log (eventName + ".completed", event);
	}
	});
	}
	if (eventName == "StatusTextListener") {
	browser.addStatusTextListener (new StatusTextListener () {
	public void changed(StatusTextEvent event) {
	log (eventName, event);
	}
	});
	}
	if (eventName == "TitleListener") {
	browser.addTitleListener (new TitleListener () {
	public void changed(TitleEvent event) {
	log (eventName, event);
	}
	});
	}
	if (eventName == "VisibilityWindowListener") {
	browser.addVisibilityWindowListener (new VisibilityWindowListener () {
	public void hide(WindowEvent event) {
	log (eventName + ".hide", event);
	}
	public void show(WindowEvent event) {
	log (eventName + ".show", event);
	}
	});
	}
	}

	boolean rtlSupport() {
	return false;
	}

	/**
	* Sets the state of the "Example" widgets.
	*/
	void setExampleWidgetState () {
	super.setExampleWidgetState ();
	mozillaButton.setSelection (browser == null ? false : (browser.getStyle () & SWT.MOZILLA) != 0);
	borderButton.setSelection (browser == null ? false : (browser.getStyle () & SWT.BORDER) != 0);
	}
	}