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/****************************************************************************
* Copyright (c) 2012 CEA LIST.
*
* 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:
* Patrick Tessier (CEA LIST) - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.extensionpoints.editors.definition;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.TreeMap;
import org.eclipse.papyrus.extensionpoints.editors.Activator;
import org.eclipse.papyrus.extensionpoints.editors.utils.IDirectEditorsIds;
/**
* the goal of this class is to store all direct editors and to provides them by taking account
* object to edit, constraint, and priority
*
*/
public class DirectEditorRegistry {
// map of direct editor indexed by priorities
protected TreeMap<Integer, List<IDirectEditorExtensionPoint>> editorMap = new TreeMap<Integer, List<IDirectEditorExtensionPoint>>();
// list of objects that can be edited
protected ArrayList<String> objectToEdits = new ArrayList<String>();
/**
* add a direct editor
* if this direct editor is already used as default in preferences, its priority becomes 0
*
* @param directEditor
* a direct editor, cannot be null
*/
public void add(IDirectEditorExtensionPoint directEditor) {
assert (directEditor != null);
objectToEdits.add(directEditor.getObjectToEdit());
Integer priority = directEditor.getPriority();
// take in account priority of preferences
String preferedLanguage = Activator.getDefault().getPreferenceStore().getString(IDirectEditorsIds.EDITOR_FOR_ELEMENT + directEditor.getObjectToEdit());
// if the language equals is store in preferences this is the default direct editor
if (preferedLanguage.equals(directEditor.getLanguage())) {
priority = new Integer(0);
}
List<IDirectEditorExtensionPoint> currentValue = editorMap.get(priority);
if (currentValue == null) {
currentValue = new ArrayList<IDirectEditorExtensionPoint>();
}
currentValue.add(directEditor);
editorMap.put(priority, currentValue);
}
/**
* put in preferences the editor with the more important priority
*/
protected void adaptPreferences() {
Iterator<String> iter = objectToEdits.iterator();
IDirectEditorExtensionPoint defaultDirectEditor = null;
while (iter.hasNext()) {
String objectToEdit = iter.next();
defaultDirectEditor = getDefaultDirectEditor(objectToEdit);
String id = IDirectEditorsIds.EDITOR_FOR_ELEMENT + defaultDirectEditor.getObjectToEdit();
String language = defaultDirectEditor.getLanguage();
// if preference set direct editor as default, do nothing
if (!Activator.getDefault().getPreferenceStore().getString(id).equals(IDirectEditorsIds.SIMPLE_DIRECT_EDITOR)) {
Activator.getDefault().getPreferenceStore().setValue(id, language);
}
}
}
@Override
public String toString() {
String out = "";
Iterator<Integer> keyIterator = editorMap.keySet().iterator();
while (keyIterator.hasNext()) {
Integer index = keyIterator.next();
out = out + "\n[" + index + "]" + "=[" + editorMap.get(index) + "]";
}
return out;
}
/**
* used to fill the registry with an array of direct editors
*
* @param directEditors
* cannot be null
*/
public void init(IDirectEditorExtensionPoint[] directEditors) {
editorMap = new TreeMap<Integer, List<IDirectEditorExtensionPoint>>();
objectToEdits = new ArrayList<String>();
for (int i = 0; i < directEditors.length; i++) {
add(directEditors[i]);
}
adaptPreferences();
}
/**
* get the direct editor with the higher priority for a given object to edit.
*
* @param ObjectToEdit
* the string that represents the element to edit
* @return a direct editor, it can be null
*/
public IDirectEditorExtensionPoint getDefaultDirectEditor(String ObjectToEdit) {
Iterator<Integer> keyIterator = editorMap.keySet().iterator();
while (keyIterator.hasNext()) {
Integer index = keyIterator.next();
Iterator<IDirectEditorExtensionPoint> iter = editorMap.get(index).iterator();
while (iter.hasNext()) {
IDirectEditorExtensionPoint directEditorExtensionPoint = iter.next();
if (directEditorExtensionPoint.getObjectToEdit().equals(ObjectToEdit)) {
return directEditorExtensionPoint;
}
}
}
return null;
}
}
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