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SemanticBrowserLabelProvider.java
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SemanticBrowserLabelProvider.java
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/*******************************************************************************
* Copyright (c) 2006, 2024 THALES GLOBAL SERVICES.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Thales - initial API and implementation
*******************************************************************************/
package org.polarsys.capella.core.ui.semantic.browser.label.provider;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.viewers.IColorProvider;
import org.eclipse.jface.viewers.IFontProvider;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.IToolTipProvider;
import org.eclipse.jface.viewers.StyledString;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.navigator.NavigatorContentService;
import org.eclipse.ui.internal.navigator.NavigatorContentServiceLabelProvider;
import org.polarsys.capella.common.ui.toolkit.browser.category.ICategory;
import org.polarsys.capella.common.ui.toolkit.browser.content.provider.wrapper.BrowserElementWrapper;
import org.polarsys.capella.common.ui.toolkit.browser.content.provider.wrapper.CategoryWrapper;
import org.polarsys.capella.common.ui.toolkit.browser.content.provider.wrapper.EObjectWrapper;
import org.polarsys.capella.common.ui.toolkit.browser.content.provider.wrapper.PrimitiveWrapper;
import org.polarsys.capella.core.platform.sirius.ui.navigator.view.CapellaCommonNavigator;
import org.polarsys.capella.core.ui.semantic.browser.CapellaBrowserActivator;
import org.polarsys.capella.core.ui.semantic.browser.IImageKeys;
@SuppressWarnings("restriction")
public class SemanticBrowserLabelProvider extends NavigatorContentServiceLabelProvider
implements ILabelProvider, IColorProvider, IFontProvider, IToolTipProvider {
protected static NavigatorContentService contentService = new NavigatorContentService(CapellaCommonNavigator.ID);
public SemanticBrowserLabelProvider() {
super(contentService);
}
/**
* The font used for category, to not forget to dispose it
*/
private Font _font;
/**
* @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
*/
@Override
public Image getImage(Object element) {
// Precondition.
if (null == element) {
return null;
}
// Initialize with Category image (so that unknown elements always have at least the category icon
Image image = CapellaBrowserActivator.getDefault().getImage(IImageKeys.IMG_CATEGORY);
// Find out a model element from given element.
if (element instanceof PrimitiveWrapper) {
image = CapellaBrowserActivator.getDefault().getImage(IImageKeys.IMG_PRIMITIVE_VARIABLES);
} else if (element instanceof EObject) {
return super.getImage(element);
} else if (element instanceof EObjectWrapper) {
element = ((EObjectWrapper) element).getElement();
return super.getImage(element);
}
return image;
}
@Override
public String getText(Object element) {
String result = null;
// Precondition.
if (null == element) {
return result;
}
if (element instanceof CategoryWrapper) {
element = ((CategoryWrapper) element).getElement();
result = ((ICategory) element).getName();
} else if (element instanceof PrimitiveWrapper) {
element = ((PrimitiveWrapper) element).getElement();
result = element.toString();
} else {
result = super.getText(element);
}
return result;
}
@Override
public StyledString getStyledText(Object element) {
// Precondition.
if (null == element) {
return null;
}
// Do not unwrap category and primitive wrappers
if (element instanceof EObjectWrapper) {
element = ((EObjectWrapper) element).getElement();
} else if (element instanceof BrowserElementWrapper) {
return new StyledString(getText(element));
}
return super.getStyledText(element);
}
/**
* @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
*/
@Override
public void dispose() {
if (null != _font) {
_font.dispose();
_font = null;
}
super.dispose();
}
/**
* @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang.Object, java.lang.String)
*/
@Override
public boolean isLabelProperty(Object element_p, String property_p) {
return false;
}
/**
* @see org.eclipse.jface.viewers.IColorProvider#getBackground(java.lang.Object)
*/
@Override
public Color getBackground(Object element_p) {
// Do nothing.
return null;
}
/**
* @see org.eclipse.jface.viewers.IColorProvider#getForeground(java.lang.Object)
*/
@Override
public Color getForeground(Object element) {
if (element instanceof CategoryWrapper) {
return PlatformUI.getWorkbench().getDisplay().getSystemColor(SWT.COLOR_BLACK);
}
return null;
}
/**
* @see org.eclipse.jface.viewers.IFontProvider#getFont(java.lang.Object)
*/
@Override
public Font getFont(Object element) {
if (element instanceof CategoryWrapper) {
if (null == _font) {
Display defaultDisplay = Display.getDefault();
Font result = defaultDisplay.getSystemFont();
FontData fontData = result.getFontData()[0];
fontData.setStyle(SWT.BOLD);
_font = new Font(defaultDisplay, fontData);
}
return _font;
}
return null;
}
@Override
public String getToolTipText(Object element) {
return null;
}
}