Home » Eclipse Projects » Remote Application Platform (RAP) » Tree selection
| Tree selection [message #85925] |
Mon, 05 May 2008 05:54  |
|
Hi all,
I have noticed a minor tree selection problem here.
Firstly, here's my snippet to reproduce :
...
public void createPartControl(Composite parent)
{
treeViewer = new TreeViewer(parent,SWT.VIRTUAL);
treeViewer.setUseHashlookup(true);
java.util.List<Map<String,Object>> list = new Vector<Map<String,
Object>>(1);
Map<String,Object> parentNode = new HashMap<String, Object>(3);
parentNode.put("id", "parentNode");
parentNode.put("caption", "Parent");
Map<String,Object> childNode = new HashMap<String, Object>(3);
childNode.put("id", "childNode");
childNode.put("caption", "Child");
Map<String,String> grandChildNode = new HashMap<String, String>(2);
grandChildNode.put("id", "grandChildNode");
grandChildNode.put("caption", "GrandChild");
parentNode.put("descendant", childNode);
childNode.put("descendant", grandChildNode);
list.add(parentNode);
treeViewer.setContentProvider(getTreeContentProvider());
treeViewer.setLabelProvider(getTreeLabelProvider());
((Tree)treeViewer.getControl()).setItemCount(list.size());
treeViewer.setInput(list);
}
private IContentProvider getTreeContentProvider()
{
return new ILazyTreeContentProvider()
{
private TreeViewer treeViewer = null;
public Object getParent(Object element){return null;}
public void dispose(){}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object
newInput)
{
treeViewer = newInput != null ? (TreeViewer)viewer : null;
}
@Override
@SuppressWarnings("unchecked")
public void updateChildCount(Object element, int currentChildCount)
{
if (!(element instanceof List)) return;
if (((List)element).size() == currentChildCount) return;
treeViewer.setChildCount(element,((List)element).size());
}
@Override
@SuppressWarnings("unchecked")
public void updateElement(Object parent, int index)
{
if (parent instanceof List)
{
List list = (List)parent;
Map map = (Map)list.get(index);
treeViewer.replace(parent, index, map);
treeViewer.setChildCount(map,1);
}
else
{
Map map = (Map)parent;
Map descendant = (Map)map.get("descendant");
if (descendant != null)
{
treeViewer.replace(parent, index, descendant);
treeViewer.setChildCount(descendant,
descendant.get("descendant") == null ? 0 : 1);
}
}
}
};
}
@SuppressWarnings("unchecked")
private IBaseLabelProvider getTreeLabelProvider()
{
return new LabelProvider()
{
@Override
public String getText(Object element)
{
return (String)((Map)element).get("caption");
}
};
}
...
Steps to reproduce :
1. Open the view.
2. Click on the + sign of 'Parent' node, the parent node is expanded &
selected.
3. Click on the + sign of 'Child' node, the child node is expanded &
selected, but the selection on parent node persists.
4. Click on the GrandChild node and the selection on Parent & Child node
persists.
I thought selection on parent node should be removed when we select the
child node unless user select & hold the CTRL at the same time.
Should I file a bug ?
Regards,
Setya
|
|
|
| Re: Tree selection [message #86028 is a reply to message #85925] |
Mon, 05 May 2008 16:42  |
Eclipse User |
|
|
|
Originally posted by: fappel.innoopract.com
Hi,
did you try to run your snippet in RCP environment? Does it behave as
expected there? If so, it's possibly a bug in RAP. If not we'll have to
digg a little bit deeper and see whether there's something wrong in your
code or if it's even a bug in the original RCP code.
Ciao
Frank
-----Ursprüngliche Nachricht-----
Von: Setya [mailto:jsetya@gmail.com]
Bereitgestellt: Montag, 5. Mai 2008 07:54
Bereitgestellt in: eclipse.technology.rap
Unterhaltung: Tree selection
Betreff: Tree selection
Hi all,
I have noticed a minor tree selection problem here.
Firstly, here's my snippet to reproduce :
...
public void createPartControl(Composite parent) {
treeViewer = new TreeViewer(parent,SWT.VIRTUAL);
treeViewer.setUseHashlookup(true);
java.util.List<Map<String,Object>> list = new Vector<Map<String,
Object>>(1);
Map<String,Object> parentNode = new HashMap<String, Object>(3);
parentNode.put("id", "parentNode");
parentNode.put("caption", "Parent");
Map<String,Object> childNode = new HashMap<String, Object>(3);
childNode.put("id", "childNode");
childNode.put("caption", "Child");
Map<String,String> grandChildNode = new HashMap<String, String>(2);
grandChildNode.put("id", "grandChildNode");
grandChildNode.put("caption", "GrandChild");
parentNode.put("descendant", childNode);
childNode.put("descendant", grandChildNode);
list.add(parentNode);
treeViewer.setContentProvider(getTreeContentProvider());
treeViewer.setLabelProvider(getTreeLabelProvider());
((Tree)treeViewer.getControl()).setItemCount(list.size());
treeViewer.setInput(list);
}
private IContentProvider getTreeContentProvider() {
return new ILazyTreeContentProvider()
{
private TreeViewer treeViewer = null;
public Object getParent(Object element){return null;}
public void dispose(){}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object
newInput)
{
treeViewer = newInput != null ? (TreeViewer)viewer : null;
}
@Override
@SuppressWarnings("unchecked")
public void updateChildCount(Object element, int currentChildCount)
{
if (!(element instanceof List)) return;
if (((List)element).size() == currentChildCount) return;
treeViewer.setChildCount(element,((List)element).size());
}
@Override
@SuppressWarnings("unchecked")
public void updateElement(Object parent, int index)
{
if (parent instanceof List)
{
List list = (List)parent;
Map map = (Map)list.get(index);
treeViewer.replace(parent, index, map);
treeViewer.setChildCount(map,1);
}
else
{
Map map = (Map)parent;
Map descendant = (Map)map.get("descendant");
if (descendant != null)
{
treeViewer.replace(parent, index, descendant);
treeViewer.setChildCount(descendant,
descendant.get("descendant") == null ? 0 : 1);
}
}
}
};
}
@SuppressWarnings("unchecked")
private IBaseLabelProvider getTreeLabelProvider() {
return new LabelProvider()
{
@Override
public String getText(Object element)
{
return (String)((Map)element).get("caption");
}
};
}
...
Steps to reproduce :
1. Open the view.
2. Click on the + sign of 'Parent' node, the parent node is expanded &
selected.
3. Click on the + sign of 'Child' node, the child node is expanded &
selected, but the selection on parent node persists.
4. Click on the GrandChild node and the selection on Parent & Child node
persists.
I thought selection on parent node should be removed when we select the
child node unless user select & hold the CTRL at the same time.
Should I file a bug ?
Regards,
Setya
|
|
|
| Re: Tree selection [message #86042 is a reply to message #86028] |
Mon, 05 May 2008 18:06 |
 Martin Dilger
Messages: 54
Registered: July 2009 |
Member |
|
|
Hi,
I have a rather strange question..
I have a folder in my workspace, which contains some images. What I need
is a File-Array for these images.
Inside my RCP, the following Snippet does what I want:
URL url = FileLocator.toFileURL(bundle.getEntry("images"));
File f = new File(url.getFile());
File[] list = f.listFiles();
This doesnt work in RAP, I expect the problem to be the File located
absolute within the Filesystem, rather as a relative path, which may be
not allowed??
Can someone give me a snippet of how this works, I spent nearly half day
to this and now itŽs enough:-)
I know how it works for a single File, but not for this use case with a
directory containing files. For sure this is easy to solve, but I really
donŽt get the 3-lines at the moment.
Thanks for your help!
|
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| |
| Re: Tree selection [message #86688 is a reply to message #86028] |
Fri, 09 May 2008 11:49 |
|
Frank,
> did you try to run your snippet in RCP environment?
I've tried it in the following snippet :
public static void main(String[] args)
{
Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout (new FillLayout());
TreeViewer treeViewer = new TreeViewer(shell,SWT.VIRTUAL);
treeViewer.setUseHashlookup(true);
java.util.List<Map<String,Object>> list = new Vector<Map<String,
Object>>(1);
Map<String,Object> parentNode = new HashMap<String, Object>(3);
parentNode.put("id", "parentNode");
parentNode.put("caption", "Parent");
Map<String,Object> childNode = new HashMap<String, Object>(3);
childNode.put("id", "childNode");
childNode.put("caption", "Child");
Map<String,String> grandChildNode = new HashMap<String, String>(2);
grandChildNode.put("id", "grandChildNode");
grandChildNode.put("caption", "GrandChild");
parentNode.put("descendant", childNode);
childNode.put("descendant", grandChildNode);
list.add(parentNode);
treeViewer.setContentProvider(getTreeContentProvider());
treeViewer.setLabelProvider(getTreeLabelProvider());
((Tree)treeViewer.getControl()).setItemCount(list.size());
treeViewer.setInput(list);
shell.setSize(400, 300);
shell.open();
while (!shell.isDisposed ())
{
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
private static IContentProvider getTreeContentProvider()
{
return new ILazyTreeContentProvider()
{
private TreeViewer treeViewer = null;
public Object getParent(Object element){return null;}
public void dispose(){}
public void inputChanged(Viewer viewer, Object oldInput, Object
newInput)
{
treeViewer = newInput != null ? (TreeViewer)viewer : null;
}
@SuppressWarnings("unchecked")
public void updateChildCount(Object element, int currentChildCount)
{
if (!(element instanceof List)) return;
if (((List)element).size() == currentChildCount) return;
treeViewer.setChildCount(element,((List)element).size());
}
@SuppressWarnings("unchecked")
public void updateElement(Object parent, int index)
{
if (parent instanceof List)
{
List list = (List)parent;
Map map = (Map)list.get(index);
treeViewer.replace(parent, index, map);
treeViewer.setChildCount(map,1);
}
else
{
Map map = (Map)parent;
Map descendant = (Map)map.get("descendant");
if (descendant != null)
{
treeViewer.replace(parent, index, descendant);
treeViewer.setChildCount(descendant,
descendant.get("descendant") == null ? 0 : 1);
}
}
}
};
}
@SuppressWarnings("unchecked")
private static IBaseLabelProvider getTreeLabelProvider()
{
return new LabelProvider()
{
@Override
public String getText(Object element)
{
return (String)((Map)element).get("caption");
}
};
}
And it seems nothing is wrong in the SWT version.
Best Regards,
Setya
|
|
|
| Re: Tree selection [message #86854 is a reply to message #86688] |
Mon, 12 May 2008 10:32 |
| Eclipse User |
|
|
|
Originally posted by: fappel.innoopract.com
Hi,
so this is probably a bug in RWT. Please file a bug for tracing it.
Thanks
Frank
-----Ursprüngliche Nachricht-----
Von: Setya [mailto:jsetya@gmail.com]
Bereitgestellt: Freitag, 9. Mai 2008 13:49
Bereitgestellt in: eclipse.technology.rap
Unterhaltung: Tree selection
Betreff: Re: Tree selection
Frank,
> did you try to run your snippet in RCP environment?
I've tried it in the following snippet :
public static void main(String[] args)
{
Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout (new FillLayout());
TreeViewer treeViewer = new TreeViewer(shell,SWT.VIRTUAL);
treeViewer.setUseHashlookup(true);
java.util.List<Map<String,Object>> list = new Vector<Map<String,
Object>>(1);
Map<String,Object> parentNode = new HashMap<String, Object>(3);
parentNode.put("id", "parentNode");
parentNode.put("caption", "Parent");
Map<String,Object> childNode = new HashMap<String, Object>(3);
childNode.put("id", "childNode");
childNode.put("caption", "Child");
Map<String,String> grandChildNode = new HashMap<String, String>(2);
grandChildNode.put("id", "grandChildNode");
grandChildNode.put("caption", "GrandChild");
parentNode.put("descendant", childNode);
childNode.put("descendant", grandChildNode);
list.add(parentNode);
treeViewer.setContentProvider(getTreeContentProvider());
treeViewer.setLabelProvider(getTreeLabelProvider());
((Tree)treeViewer.getControl()).setItemCount(list.size());
treeViewer.setInput(list);
shell.setSize(400, 300);
shell.open();
while (!shell.isDisposed ())
{
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
private static IContentProvider getTreeContentProvider()
{
return new ILazyTreeContentProvider()
{
private TreeViewer treeViewer = null;
public Object getParent(Object element){return null;}
public void dispose(){}
public void inputChanged(Viewer viewer, Object oldInput, Object
newInput)
{
treeViewer = newInput != null ? (TreeViewer)viewer : null;
}
@SuppressWarnings("unchecked")
public void updateChildCount(Object element, int
currentChildCount)
{
if (!(element instanceof List)) return;
if (((List)element).size() == currentChildCount) return;
treeViewer.setChildCount(element,((List)element).size());
}
@SuppressWarnings("unchecked")
public void updateElement(Object parent, int index)
{
if (parent instanceof List)
{
List list = (List)parent;
Map map = (Map)list.get(index);
treeViewer.replace(parent, index, map);
treeViewer.setChildCount(map,1);
}
else
{
Map map = (Map)parent;
Map descendant = (Map)map.get("descendant");
if (descendant != null)
{
treeViewer.replace(parent, index, descendant);
treeViewer.setChildCount(descendant,
descendant.get("descendant") == null ? 0 : 1);
}
}
}
};
}
@SuppressWarnings("unchecked")
private static IBaseLabelProvider getTreeLabelProvider()
{
return new LabelProvider()
{
@Override
public String getText(Object element)
{
return (String)((Map)element).get("caption");
}
};
}
And it seems nothing is wrong in the SWT version.
Best Regards,
Setya
|
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