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/*******************************************************************************
* Copyright (c) 2007, 2008 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.texteditor;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.jface.internal.text.html.BrowserInformationControl;
import org.eclipse.jface.internal.text.html.HTMLPrinter;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.AbstractReusableInformationControlCreator;
import org.eclipse.jface.text.DefaultInformationControl;
import org.eclipse.jface.text.IInformationControl;
import org.eclipse.jface.text.IInformationControlExtension4;
import org.eclipse.ui.editors.text.EditorsUI;
/**
* The revision information control creator that can show the tool tip affordance.
*
* @since 3.3
*/
class RevisionHoverInformationControlCreator extends AbstractReusableInformationControlCreator {
private static final String fgStyleSheet= "/* Font definitions */\n" + //$NON-NLS-1$
"body, h1, h2, h3, h4, h5, h6, p, table, td, caption, th, ul, ol, dl, li, dd, dt {font-family: sans-serif; font-size: 9pt }\n" + //$NON-NLS-1$
"pre { font-family: monospace; font-size: 9pt }\n" + //$NON-NLS-1$
"\n" + //$NON-NLS-1$
"/* Margins */\n" + //$NON-NLS-1$
"body { overflow: auto; margin-top: 0; margin-bottom: 4; margin-left: 3; margin-right: 0 }\n" + //$NON-NLS-1$
"h1 { margin-top: 5; margin-bottom: 1 } \n" + //$NON-NLS-1$
"h2 { margin-top: 25; margin-bottom: 3 }\n" + //$NON-NLS-1$
"h3 { margin-top: 20; margin-bottom: 3 }\n" + //$NON-NLS-1$
"h4 { margin-top: 20; margin-bottom: 3 }\n" + //$NON-NLS-1$
"h5 { margin-top: 0; margin-bottom: 0 }\n" + //$NON-NLS-1$
"p { margin-top: 10px; margin-bottom: 10px }\n" + //$NON-NLS-1$
"pre { margin-left: 6 }\n" + //$NON-NLS-1$
"ul { margin-top: 0; margin-bottom: 10 }\n" + //$NON-NLS-1$
"li { margin-top: 0; margin-bottom: 0 } \n" + //$NON-NLS-1$
"li p { margin-top: 0; margin-bottom: 0 } \n" + //$NON-NLS-1$
"ol { margin-top: 0; margin-bottom: 10 }\n" + //$NON-NLS-1$
"dl { margin-top: 0; margin-bottom: 10 }\n" + //$NON-NLS-1$
"dt { margin-top: 0; margin-bottom: 0; font-weight: bold }\n" + //$NON-NLS-1$
"dd { margin-top: 0; margin-bottom: 0 }\n" + //$NON-NLS-1$
"\n" + //$NON-NLS-1$
"/* Styles and colors */\n" + //$NON-NLS-1$
"a:link { color: hyperlinkColor }\n" + //$NON-NLS-1$
"a:hover { color: activeHyperlinkColor }\n" + //$NON-NLS-1$
"a:visited { text-decoration: underline }\n" + //$NON-NLS-1$
"h4 { font-style: italic }\n" + //$NON-NLS-1$
"strong { font-weight: bold }\n" + //$NON-NLS-1$
"em { font-style: italic }\n" + //$NON-NLS-1$
"var { font-style: italic }\n" + //$NON-NLS-1$
"th { font-weight: bold }\n" + //$NON-NLS-1$
""; //$NON-NLS-1$
private static final class RevisionInformationControl extends BrowserInformationControl {
public RevisionInformationControl(Shell parent, String statusFieldText) {
super(parent, JFaceResources.DIALOG_FONT, statusFieldText);
}
public RevisionInformationControl(Shell parent) {
super(parent, JFaceResources.DIALOG_FONT, true);
}
/**
* {@inheritDoc}
*
* @deprecated use {@link #setInput(Object)}
*/
@Deprecated
@Override
public void setInformation(String content) {
content= addCSSToHTMLFragment(content);
super.setInformation(content);
}
/**
* Adds a HTML header and CSS info if <code>html</code> is only an HTML fragment (has no
* <html> section).
*
* @param html the html / text produced by a revision
* @return modified html
*/
private String addCSSToHTMLFragment(String html) {
int max= Math.min(100, html.length());
if (html.substring(0, max).indexOf("<html>") != -1) //$NON-NLS-1$
// there is already a header
return html;
StringBuilder info= new StringBuilder(512 + html.length());
HTMLPrinter.insertPageProlog(info, 0, fgStyleSheet);
info.append(html);
HTMLPrinter.addPageEpilog(info);
return info.toString();
}
}
private boolean fIsFocusable;
public RevisionHoverInformationControlCreator(boolean isFocusable) {
fIsFocusable= isFocusable;
}
@Override
public boolean canReuse(IInformationControl control) {
if (!super.canReuse(control))
return false;
if (control instanceof IInformationControlExtension4)
((IInformationControlExtension4)control).setStatusText(EditorsUI.getTooltipAffordanceString());
return true;
}
@Override
protected IInformationControl doCreateInformationControl(Shell parent) {
if (BrowserInformationControl.isAvailable(parent)) {
if (fIsFocusable)
return new RevisionInformationControl(parent);
return new RevisionInformationControl(parent, EditorsUI.getTooltipAffordanceString());
}
if (fIsFocusable)
return new DefaultInformationControl(parent, true);
return new DefaultInformationControl(parent, EditorsUI.getTooltipAffordanceString());
}
}
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