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/*******************************************************************************
* Copyright (c) 2008, 2015 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
* Nikolay Botev - bug 240651
******************************************************************************/
package org.eclipse.ui.part;
import org.eclipse.jface.resource.ColorRegistry;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.internal.IWorkbenchThemeConstants;
import org.eclipse.ui.internal.WorkbenchWindow;
import org.eclipse.ui.themes.ITheme;
/**
* A MultiEditor is a composite of editors.
*
* This class is intended to be subclassed.
*
*/
public abstract class MultiEditor extends AbstractMultiEditor {
/**
* The colors used to draw the title bar of the inner editors
*/
public static class Gradient {
public Color fgColor;
public Color[] bgColors;
public int[] bgPercents;
}
/**
* Updates the gradient in the title bar.
* @param editor
*/
public void updateGradient(IEditorPart editor) {
boolean activeEditor = editor == getSite().getPage().getActiveEditor();
boolean activePart = editor == getSite().getPage().getActivePart();
ITheme theme = editor.getEditorSite().getWorkbenchWindow()
.getWorkbench().getThemeManager().getCurrentTheme();
Gradient g = new Gradient();
ColorRegistry colorRegistry = theme.getColorRegistry();
if (activePart) {
g.fgColor = colorRegistry
.get(IWorkbenchThemeConstants.ACTIVE_TAB_TEXT_COLOR);
g.bgColors = new Color[2];
g.bgColors[0] = colorRegistry
.get(IWorkbenchThemeConstants.ACTIVE_TAB_BG_START);
g.bgColors[1] = colorRegistry
.get(IWorkbenchThemeConstants.ACTIVE_TAB_BG_END);
} else {
if (activeEditor) {
g.fgColor = colorRegistry
.get(IWorkbenchThemeConstants.ACTIVE_TAB_TEXT_COLOR);
g.bgColors = new Color[2];
g.bgColors[0] = colorRegistry
.get(IWorkbenchThemeConstants.ACTIVE_TAB_BG_START);
g.bgColors[1] = colorRegistry
.get(IWorkbenchThemeConstants.ACTIVE_TAB_BG_END);
} else {
g.fgColor = colorRegistry
.get(IWorkbenchThemeConstants.INACTIVE_TAB_TEXT_COLOR);
g.bgColors = new Color[2];
g.bgColors[0] = colorRegistry
.get(IWorkbenchThemeConstants.INACTIVE_TAB_BG_START);
g.bgColors[1] = colorRegistry
.get(IWorkbenchThemeConstants.INACTIVE_TAB_BG_END);
}
}
g.bgPercents = new int[] { theme
.getInt(IWorkbenchThemeConstants.ACTIVE_TAB_PERCENT) };
drawGradient(editor, g);
}
/**
* Draw the gradient in the title bar.
*/
protected abstract void drawGradient(IEditorPart innerEditor, Gradient g);
/**
* Create the control of the inner editor.
*
* Must be called by subclass.
*/
public Composite createInnerPartControl(Composite parent,
final IEditorPart e) {
Composite content = new Composite(parent, SWT.NONE);
content.setLayout(new FillLayout());
e.createPartControl(content);
parent.addListener(SWT.Activate, event -> {
if (event.type == SWT.Activate) {
activateEditor(e);
}
});
return content;
}
/*
* @see IWorkbenchPart#setFocus()
*/
@Override
public void setFocus() {
super.setFocus();
updateGradient(getActiveEditor());
}
/**
* Activates the given nested editor.
*
* @param part the nested editor
* @since 3.5
*/
@Override
public void activateEditor(IEditorPart part) {
IEditorPart oldEditor = getActiveEditor();
super.activateEditor(part);
updateGradient(oldEditor);
}
/**
* Return true if the shell is activated.
*/
protected boolean getShellActivated() {
WorkbenchWindow window = (WorkbenchWindow) getSite().getPage()
.getWorkbenchWindow();
return window.getShellActivated();
}
@Override
public Composite getInnerEditorContainer(
IEditorReference innerEditorReference) {
// This method is not used by MutliEditor
return null;
}
@Override
protected void innerEditorsCreated() {
// Nothing to do
}
}
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