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/*******************************************************************************
* Copyright (c) 2000, 2016 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.help.ui.internal.views;
import org.eclipse.help.ui.internal.HelpUIResources;
import org.eclipse.help.ui.internal.IHelpUIConstants;
import org.eclipse.help.ui.internal.Messages;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.forms.AbstractFormPart;
import org.eclipse.ui.forms.HyperlinkGroup;
import org.eclipse.ui.forms.events.HyperlinkAdapter;
import org.eclipse.ui.forms.events.HyperlinkEvent;
import org.eclipse.ui.forms.events.IHyperlinkListener;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.eclipse.ui.forms.widgets.ImageHyperlink;
public class SeeAlsoPart extends AbstractFormPart implements IHelpPart {
private Composite container;
private Composite linkContainer;
private ReusableHelpPart helpPart;
private String id;
private Image bgImage;
private HyperlinkGroup hyperlinkGroup;
/**
* @param parent
* @param toolkit
* @param style
*/
public SeeAlsoPart(Composite parent, FormToolkit toolkit) {
container = toolkit.createComposite(parent);
container.setBackgroundMode(SWT.INHERIT_DEFAULT);
GridLayout layout = new GridLayout();
layout.marginHeight = 0;
//layout.marginWidth = 0;
layout.verticalSpacing = 0;
layout.marginTop = 2;
container.setLayout(layout);
linkContainer = new Composite(container, SWT.NULL);
linkContainer.setLayoutData(new GridData(GridData.FILL_BOTH));
RowLayout rlayout = new RowLayout();
rlayout.marginBottom = 0;
rlayout.marginTop = 0;
rlayout.marginLeft = 0;
rlayout.marginRight = 0;
rlayout.justify = false;
rlayout.wrap = true;
linkContainer.setLayout(rlayout);
hyperlinkGroup = new HyperlinkGroup(container.getDisplay());
hyperlinkGroup.setHyperlinkUnderlineMode(toolkit.getHyperlinkGroup().getHyperlinkUnderlineMode());
}
private void updateLinks(String href) {
Control [] children = linkContainer.getChildren();
for (int i=0; i<children.length; i++) {
ImageHyperlink link = (ImageHyperlink)children[i];
RowData data = (RowData)link.getLayoutData();
boolean isCurrentPage = link.getHref().equals(href);
if (isCurrentPage) {
link.setFont(JFaceResources.getBannerFont());
} else {
link.setFont(JFaceResources.getDefaultFont());
}
data.exclude = false;
link.setVisible(!data.exclude);
}
linkContainer.layout();
helpPart.reflow();
}
private void addLinks(final Composite container, FormToolkit toolkit) {
IHyperlinkListener listener = new HyperlinkAdapter() {
@Override
public void linkActivated(final HyperlinkEvent e) {
container.getDisplay()
.asyncExec(() -> SeeAlsoPart.this.helpPart.showPage((String) e.getHref(), true));
}
};
if ((helpPart.getStyle() & ReusableHelpPart.ALL_TOPICS) != 0)
addPageLink(container, toolkit, Messages.SeeAlsoPart_allTopics, IHelpUIConstants.HV_ALL_TOPICS_PAGE,
IHelpUIConstants.IMAGE_ALL_TOPICS, listener);
if ((helpPart.getStyle() & ReusableHelpPart.SEARCH) != 0) {
addPageLink(container, toolkit, Messages.SeeAlsoPart_search, IHelpUIConstants.HV_FSEARCH_PAGE,
IHelpUIConstants.IMAGE_HELP_SEARCH, listener);
}
if ((helpPart.getStyle() & ReusableHelpPart.CONTEXT_HELP) != 0) {
addPageLink(container, toolkit, Messages.SeeAlsoPart_contextHelp,
IHelpUIConstants.HV_CONTEXT_HELP_PAGE,
IHelpUIConstants.IMAGE_RELATED_TOPICS, listener);
}
if ((helpPart.getStyle() & ReusableHelpPart.BOOKMARKS) != 0) {
addPageLink(container, toolkit, Messages.SeeAlsoPart_bookmarks,
IHelpUIConstants.HV_BOOKMARKS_PAGE,
IHelpUIConstants.IMAGE_BOOKMARKS, listener);
}
if ((helpPart.getStyle() & ReusableHelpPart.INDEX) != 0) {
addPageLink(container, toolkit, Messages.SeeAlsoPart_index,
IHelpUIConstants.HV_INDEX_PAGE,
IHelpUIConstants.IMAGE_INDEX, listener);
}
}
private void addPageLink(Composite container, FormToolkit toolkit, String text, String id,
String imgRef, IHyperlinkListener listener) {
String cid = helpPart.getCurrentPageId();
if (cid!=null && cid.equals(id))
return;
ImageHyperlink link = new ImageHyperlink(container, SWT.WRAP|toolkit.getOrientation());
toolkit.adapt(link, true, true);
link.setImage(HelpUIResources.getImage(imgRef));
link.setText(text);
link.setHref(id);
link.setBackground(null);
link.addHyperlinkListener(listener);
hyperlinkGroup.add(link);
RowData data = new RowData();
data.exclude = false;
link.setLayoutData(data);
}
@Override
public Control getControl() {
return container;
}
@Override
public void init(ReusableHelpPart parent, String id, IMemento memento) {
this.helpPart = parent;
this.id = id;
FormToolkit toolkit = helpPart.getForm().getToolkit();
addLinks(linkContainer, toolkit);
Composite padding = toolkit.createComposite(container);
GridData paddingData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
paddingData.heightHint = 2;
padding.setLayoutData(paddingData);
Composite separator = new Composite(container, SWT.NULL);
GridData seperatorData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
separator.setBackground(toolkit.getColors().getBorderColor());
seperatorData.heightHint = 1;
separator.setLayoutData(seperatorData);
}
@Override
public String getId() {
return id;
}
@Override
public void setVisible(boolean visible) {
container.setVisible(visible);
if (visible)
markStale();
}
@Override
public void dispose() {
super.dispose();
if (bgImage != null && !bgImage.isDisposed()) {
bgImage.dispose();
}
}
@Override
public boolean fillContextMenu(IMenuManager manager) {
return false;
}
@Override
public boolean hasFocusControl(Control control) {
return control != null && control.getParent() == linkContainer;
}
@Override
public IAction getGlobalAction(String id) {
if (id.equals(ActionFactory.COPY.getId()))
return helpPart.getCopyAction();
return null;
}
@Override
public void stop() {
}
@Override
public void refresh() {
if (linkContainer!=null && helpPart.getCurrentPageId()!=null)
updateLinks(helpPart.getCurrentPageId());
super.refresh();
}
@Override
public void toggleRoleFilter() {
}
@Override
public void refilter() {
}
@Override
public void saveState(IMemento memento) {
}
@Override
public void setFocus() {
if (linkContainer!=null)
linkContainer.setFocus();
}
}
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