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/*******************************************************************************
* Copyright (c) 2007, 2010 Wind River Systems 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.dsf.ui.viewmodel.properties;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.eclipse.cdt.dsf.concurrent.ThreadSafe;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.debug.internal.ui.viewers.model.provisional.ILabelUpdate;
/**
* Class used by the PropertiesBasedLabelProvider to generate store
* label attributes related to a single column. Each column info is
* configured with an array of attributes (there are currently four
* types of attributes: text, image, font, and color), which are
* evaluated in order to generate the label.
* <p/>
* Clients are not intended to extend this class.
*
* @see PropertiesBasedLabelProvider
*
* @since 1.0
*/
@ThreadSafe
public class LabelColumnInfo {
/**
* Calculated list of property names that need to be retrieved to
* generate the label for this column.
*/
private String[] fPropertyNames;
/**
* Array of label attribute objects.
*/
private LabelAttribute[] fLabelAttributes;
/**
* Creates the column info object with given array of attributes.
* @param attributeInfos Attributes for the label.
*/
public LabelColumnInfo(LabelAttribute[] attributes)
{
fLabelAttributes = attributes;
List<String> names = new LinkedList<String>();
for (LabelAttribute attr : attributes) {
for (String name : attr.getPropertyNames()) {
names.add(name);
}
}
fPropertyNames = names.toArray(new String[names.size()]);
}
/**
* Returns the property names that need to be retrieved in order
* to generate the label for this column.
*/
public String[] getPropertyNames() { return fPropertyNames; }
/**
* Returns the list of configured label attributes for this column.
*/
public LabelAttribute[] getLabelAttributes() { return fLabelAttributes; }
/**
* Returns the list of configured label attributes for this column.
*
* @since 2.1
*/
protected void setLabelAttributes(LabelAttribute[] attributes) {
fLabelAttributes = attributes;
List<String> names = new LinkedList<String>();
for (LabelAttribute attr : attributes) {
for (String name : attr.getPropertyNames()) {
names.add(name);
}
}
fPropertyNames = names.toArray(new String[names.size()]);
}
/**
* Inserts an attribute in front of all the other existing attributes.
*
* @since 2.1
*/
public void insertAttribute(LabelAttribute attribute) {
LabelAttribute[] newAttributeList = new LabelAttribute[fLabelAttributes.length+1];
for ( int idx = 0 ; idx < fLabelAttributes.length; idx ++ ) {
newAttributeList[ idx + 1 ] = fLabelAttributes[ idx ];
}
newAttributeList[ 0 ] = attribute;
setLabelAttributes( newAttributeList );
}
/**
* Updates the label parameters for this column based on the provided
* properties. The label information is written to the givne label
* update under the given column index.
*
* @param update Update to write to.
* @param columnIndex Column to write label information under.
* @param status Result of the properties update
* @param properties Map of properties to use to generate the label.
*
* @since 2.0
*/
public void updateColumn(ILabelUpdate update, int columnIndex, IStatus status, Map<String,Object> properties) {
boolean textSet = false;
boolean imageSet = false;
boolean fontSet = false;
boolean foregroundSet = false;
boolean backgroundSet = false;
LabelAttribute[] labelAttributes = getLabelAttributes();
for (LabelAttribute info : labelAttributes) {
if (!(info instanceof LabelText && textSet) &&
!(info instanceof LabelImage && imageSet) &&
!(info instanceof LabelFont && fontSet) &&
!(info instanceof LabelForeground && foregroundSet) &&
!(info instanceof LabelBackground && backgroundSet) &&
info.isEnabled(status, properties))
{
info.updateAttribute(update, columnIndex, status, properties);
textSet = textSet || info instanceof LabelText;
imageSet = imageSet || info instanceof LabelImage;
fontSet = fontSet || info instanceof LabelFont;
foregroundSet = foregroundSet || info instanceof LabelForeground;
backgroundSet = backgroundSet || info instanceof LabelBackground;
}
}
}
}
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