update/org.eclipse.update.ui/src/org/eclipse/update/internal/ui/forms/SiteForm.java

package org.eclipse.update.internal.ui.forms;
/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */

import org.eclipse.update.internal.ui.pages.*;
import org.eclipse.update.internal.ui.parts.*;
import org.eclipse.update.internal.ui.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.update.ui.forms.internal.*;
import org.eclipse.swt.layout.*;
import org.eclipse.ui.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.*;
import org.eclipse.update.core.*;
import org.eclipse.update.internal.ui.model.*;
import org.eclipse.swt.custom.BusyIndicator;
import java.net.URL;
import java.net.MalformedURLException;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.update.ui.forms.internal.engine.FormEngine;
import org.eclipse.jface.action.IStatusLineManager;
import org.eclipse.update.internal.ui.views.*;

public class SiteForm extends UpdateWebForm {
	private static final String KEY_DESC = "SitePage.desc";
	private static final String KEY_LINK = "SitePage.link";
	private Label url;
	private SelectableFormLabel link;
	private ISiteAdapter currentAdapter;
	private Image updateSitesImage;
	private static final String KEY_UPDATE_SITES_IMAGE = "updateSites";

	public SiteForm(UpdateFormPage page) {
		super(page);
		updateSitesImage = UpdateUIPluginImages.DESC_SITES_VIEW.createImage();
	}

	public void dispose() {
		updateSitesImage.dispose();
		super.dispose();
	}

	public void initialize(Object modelObject) {
		setHeadingText("");
		super.initialize(modelObject);
		//((Composite)getControl()).layout(true);
	}

	protected void createContents(Composite parent) {
		HTMLTableLayout layout = new HTMLTableLayout();
		parent.setLayout(layout);
		layout.leftMargin = layout.rightMargin = 10;
		layout.topMargin = 10;
		layout.horizontalSpacing = 0;
		layout.verticalSpacing = 20;
		layout.numColumns = 1;

		FormWidgetFactory factory = getFactory();
		url = factory.createHeadingLabel(parent, null);

		FormEngine desc = factory.createFormEngine(parent);
		setFocusControl(desc);
		desc.registerTextObject(KEY_UPDATE_SITES_IMAGE, updateSitesImage);
		desc.load(UpdateUIPlugin.getResourceString(KEY_DESC), true, true);
		TableData td = new TableData();
		td.align = TableData.FILL;
		td.grabHorizontal = true;
		desc.setLayoutData(td);

		IHyperlinkListener listener;
		IActionBars bars = getPage().getView().getViewSite().getActionBars();
		final IStatusLineManager manager = bars.getStatusLineManager();

		listener = new HyperlinkAdapter() {
			public void linkEntered(Control link) {
				ISite site = currentAdapter.getSite();
				if (site != null) {
					URL infoURL = getRawURL(site); // do not show callback string
					if (infoURL != null) {
						manager.setMessage(infoURL.toString());
					}
				}
			}
			public void linkExited(Control link) {
				manager.setMessage(null);
			}
			public void linkActivated(Control link) {
				if (currentAdapter == null)
					return;
				BusyIndicator.showWhile(getControl().getDisplay(), new Runnable() {
					public void run() {
						ISite site = currentAdapter.getSite();
						if (site != null) {
							URL infoURL = getURLforSite(site); // navigate with callback string
							if (infoURL != null) {
								DetailsView dv = (DetailsView) getPage().getView();
								dv.showURL(infoURL.toString());
							}
						}
					}
				});
			}
			public URL getURLforSite(ISite site) {
				URL link = getRawURL(site);
				if (link == null)
					return null;
				String callback = WebInstallHandler.getCallbackString();
				if (callback == null)
					return link;
				try {
					return new URL(link.toExternalForm() + callback);
				} catch (MalformedURLException e) {
					return link;
				}
			}
		};
		link = new SelectableFormLabel(parent, SWT.NULL);
		link.setText(UpdateUIPlugin.getResourceString(KEY_LINK));
		factory.turnIntoHyperlink(link, listener);
	}

	public void expandTo(Object obj) {
		if (obj instanceof ISiteAdapter) {
			inputChanged((ISiteAdapter) obj);
		}
	}

	private void inputChanged(ISiteAdapter adapter) {
		setHeadingText(adapter.getLabel());
		url.setText(adapter.getURL().toString());
		updateLinkVisibility(adapter);
		url.getParent().layout();
		((Composite) getControl()).layout();
		updateSize();
		getControl().redraw();
		currentAdapter = adapter;
	}

	public URL getRawURL(ISite site) {
		IURLEntry entry = site.getDescription();
		if (entry == null)
			return null;
		return entry.getURL();
	}

	private void updateLinkVisibility(ISiteAdapter adapter) {
		/*
		ISite site = adapter.getSite();
		URL infoURL = getRawURL(site);
		link.setVisible(infoURL!=null);
		*/
	}
}