Attachment 85704 Details for Bug 213623 – Adapts ValidationStatusMap for IMessageManagers

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Adapts ValidationStatusMap for IMessageManagers

MessageManagerListener.java (text/plain), 3.94 KB, created by Thomas Kratz

on 2007-12-21 03:51:07 EST

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Filename:

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Creator: Thomas Kratz

Created: 2007-12-21 03:51:07 EST

Size: 3.94 KB

patch

obsolete

>package de.eiswind.paris.client.core.databinding;
>
>import java.util.HashMap;
>import java.util.Map;
>
>import org.eclipse.core.databinding.Binding;
>import org.eclipse.core.databinding.observable.IObservable;
>import org.eclipse.core.databinding.observable.map.IMapChangeListener;
>import org.eclipse.core.databinding.observable.map.MapChangeEvent;
>import org.eclipse.core.databinding.observable.map.MapDiff;
>import org.eclipse.core.runtime.IStatus;
>import org.eclipse.jface.databinding.swt.ISWTObservable;
>import org.eclipse.jface.databinding.viewers.IViewerObservableList;
>import org.eclipse.jface.databinding.viewers.IViewerObservableValue;
>import org.eclipse.jface.dialogs.IMessageProvider;
>import org.eclipse.swt.widgets.Control;
>import org.eclipse.swt.widgets.Widget;
>import org.eclipse.ui.forms.IMessageManager;
>
>/**
> * Converts the ISTatus objects from the status Map of a DataBindingContext to
> * by handled by a UI Forms IMessageManager.
> * 
> * @author Thomas
> * 
> */
>public class MessageManagerListener implements IMapChangeListener {
>
>	private IMessageManager mgr;
>
>	private static final KeyMap keyMap = new KeyMap();
>
>	public MessageManagerListener(IMessageManager mgr) {
>
>		this.mgr = mgr;
>
>	}
>
>	public void handleMapChange(MapChangeEvent event) {
>		MapDiff diff = event.diff;
>		for (Object o : diff.getAddedKeys()) {
>			changeMessage((Binding) o, (IStatus) diff.getNewValue(o));
>		}
>		for (Object o : diff.getChangedKeys()) {
>			changeMessage((Binding) o, (IStatus) diff.getNewValue(o));
>		}
>		for (Object o : diff.getRemovedKeys()) {
>			removeMessage((Binding) o);
>		}
>
>	}
>
>	protected void changeMessage(Binding binding, IStatus status) {
>		if (status.getSeverity() == IStatus.OK) {
>			removeMessage(binding);
>			return;
>		}
>		Control control = guessControl(binding);
>		if (control != null) {
>			mgr.addMessage(getKey(binding), status.getMessage(), null, keyMap.getMessageProviderKey(status
>					.getSeverity()), control);
>
>		} else {
>			mgr.addMessage(getKey(binding), status.getMessage(), null, keyMap.getMessageProviderKey(status
>					.getSeverity()));
>		}
>	}
>
>	protected void removeMessage(Binding binding) {
>		Control control = guessControl(binding);
>		if (control != null) {
>			mgr.removeMessage(getKey(binding), control);
>		} else {
>			mgr.removeMessage(getKey(binding));
>		}
>	}
>
>	protected Control guessControl(Binding b) {
>		Control control = guessControl(b.getModel());
>		if (control != null) {
>			return control;
>		}
>		control = guessControl(b.getTarget());
>		return control;
>	}
>
>	/** if this observable is bound to a control it will be returned */
>	protected Control guessControl(IObservable value) {
>		if (value instanceof ISWTObservable) {
>			Widget w = ((ISWTObservable) value).getWidget();
>			if (w instanceof Control) {
>				return (Control) w;
>			}
>		}
>		if (value instanceof IViewerObservableValue) {
>			return ((IViewerObservableValue) value).getViewer().getControl();
>		}
>		if (value instanceof IViewerObservableList) {
>			return ((IViewerObservableList) value).getViewer().getControl();
>		}
>		return null;
>	}
>
>	protected String getKey(Binding binding) {
>		System.out.println(binding.hashCode());
>		return "Bridge:" + Integer.valueOf(binding.hashCode()).toString();
>	}
>
>	protected static class KeyMap {
>		private Map<Integer, Integer> keymap = new HashMap<Integer, Integer>();
>
>		protected KeyMap() {
>			keymap.put(Integer.valueOf(IStatus.ERROR), Integer.valueOf(IMessageProvider.ERROR));
>			keymap.put(Integer.valueOf(IStatus.INFO), Integer.valueOf(IMessageProvider.WARNING));
>			keymap.put(Integer.valueOf(IStatus.INFO), Integer.valueOf(IMessageProvider.INFORMATION));
>			keymap.put(Integer.valueOf(IStatus.OK), Integer.valueOf(IMessageProvider.NONE));
>			keymap.put(Integer.valueOf(IStatus.CANCEL), Integer.valueOf(IMessageProvider.INFORMATION));
>		}
>
>		protected int getMessageProviderKey(int iStatusKey) {
>
>			return keymap.get(Integer.valueOf(iStatusKey)).intValue();
>		}
>	}
>}

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Attachments on bug 213623: 85682 | 85704