mirrors/cdt
1
0
Fork 0
mirror of https://github.com/eclipse-cdt/cdt synced 2025-09-10 12:03:16 +02:00
Code Issues Wiki Activity

2004-11-24 Alain Magloire

Browse source 
Remove unused class, reduce confusion in code maintainance.
	* src/org/eclipse/cdt/internal/ui/util/ProblemItemMapper.java
This commit is contained in:
Alain Magloire 2004-11-25 00:32:53 +00:00
parent c4a7c7ac9d
commit 58c90760ea
2 changed files with 4 additions and 201 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
core/org.eclipse.cdt.ui/ChangeLog
View file

@ -1,3 +1,7 @@
2004-11-24 Alain Magloire
Remove unused class, reduce confusion in code maintainance.
* src/org/eclipse/cdt/internal/ui/util/ProblemItemMapper.java
2004-11-19 Alain Magloire 2004-11-19 Alain Magloire
Fix for PR 39204 Fix for PR 39204
* src/org/eclipse/cdt/internal/ui/editor/CEditor.java * src/org/eclipse/cdt/internal/ui/editor/CEditor.java

201
core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/util/ProblemItemMapper.java
View file

@ -1,201 +0,0 @@
/*******************************************************************************
* Copyright (c) 2000, 2004 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.ui.util;
import org.eclipse.cdt.core.model.ICElement;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Stack;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Item;
import org.eclipse.jface.viewers.ILabelProvider;
/**
* Helper class for updating error markers.
* Items are mapped to paths of their underlying resources.
* Method <code>problemsChanged</code> updates all items that are affected from the changed
* elements.
*/
public class ProblemItemMapper {
private static final int NUMBER_LIST_REUSE= 10;
// map from path to item
private HashMap fPathToItem;
private Stack fReuseLists;
public ProblemItemMapper() {
fPathToItem= new HashMap();
fReuseLists= new Stack();
}
/**
* Updates the icons of all mapped elements containing to the changed elements.
* Must be called from the UI thread.
*/
public void problemsChanged(Collection changedPaths, ILabelProvider lprovider) {
// iterate over the smaller set/map
if (changedPaths.size() <= fPathToItem.size()) {
iterateChanges(changedPaths, lprovider);
} else {
iterateItems(changedPaths, lprovider);
}
}
private void iterateChanges(Collection changedPaths, ILabelProvider lprovider) {
Iterator elements= changedPaths.iterator();
while (elements.hasNext()) {
IPath curr= (IPath) elements.next();
Object obj= fPathToItem.get(curr);
if (obj == null) {
// not mapped
} else if (obj instanceof Item) {
refreshIcon(lprovider, (Item)obj);
} else { // List of Items
List list= (List) obj;
for (int i= 0; i < list.size(); i++) {
refreshIcon(lprovider, (Item) list.get(i));
}
}
}
}
private void iterateItems(Collection changedPaths, ILabelProvider lprovider) {
Iterator keys= fPathToItem.keySet().iterator();
while (keys.hasNext()) {
IPath curr= (IPath) keys.next();
if (changedPaths.contains(curr)) {
Object obj= fPathToItem.get(curr);
if (obj instanceof Item) {
refreshIcon(lprovider, (Item)obj);
} else { // List of Items
List list= (List) obj;
for (int i= 0; i < list.size(); i++) {
refreshIcon(lprovider, (Item) list.get(i));
}
}
}
}
}
private void refreshIcon(ILabelProvider lprovider, Item item) {
if (!item.isDisposed()) { // defensive code
Object data= item.getData();
if (data instanceof ICElement && !((ICElement)data).exists()) {
// @@@ not yet return;
}
Image old= item.getImage();
Image image= lprovider.getImage(data);
if (image != null && image != old) {
item.setImage(image);
}
}
}
/**
* Adds a new item to the map.
* @param element Element to map
* @param item The item used for the element
*/
public void addToMap(Object element, Item item) {
IPath path= getCorrespondingPath(element);
if (path != null) {
Object existingMapping= fPathToItem.get(path);
if (existingMapping == null) {
fPathToItem.put(path, item);
} else if (existingMapping instanceof Item) {
if (existingMapping != item) {
List list= newList();
list.add(existingMapping);
list.add(item);
fPathToItem.put(path, list);
}
} else { // List
List list= (List)existingMapping;
if (!list.contains(item)) {
list.add(item);
}
}
}
}
/**
* Removes an element from the map.
*/
public void removeFromMap(Object element, Item item) {
IPath path= getCorrespondingPath(element);
if (path != null) {
Object existingMapping= fPathToItem.get(path);
if (existingMapping == null) {
return;
} else if (existingMapping instanceof Item) {
fPathToItem.remove(path);
} else { // List
List list= (List) existingMapping;
list.remove(item);
if (list.isEmpty()) {
fPathToItem.remove(list);
releaseList(list);
}
}
}
}
private List newList() {
if (!fReuseLists.isEmpty()) {
return (List) fReuseLists.pop();
}
return new ArrayList(2);
}
private void releaseList(List list) {
if (fReuseLists.size() < NUMBER_LIST_REUSE) {
fReuseLists.push(list);
}
}
/**
* Clears the map.
*/
public void clearMap() {
fPathToItem.clear();
}
/**
* Method that decides which elements can have error markers
* Returns null if an element can not have error markers.
*/
private static IPath getCorrespondingPath(Object element) {
if (element instanceof ICElement) {
ICElement elem= (ICElement) element;
//if (!elem.isReadOnly()) { // only modifieable elements can get error ticks
return elem.getPath();
//}
//return null;
} else if (element instanceof IResource) {
return ((IResource)element).getFullPath();
}
return null;
}
}