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/**
*
*/
package org.gluster.storage.management.console.views.pages;
import java.util.List;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnViewer;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.gluster.storage.management.client.VolumesClient;
import org.gluster.storage.management.console.GlusterDataModelManager;
import org.gluster.storage.management.console.utils.GUIHelper;
import org.gluster.storage.management.core.model.Volume;
import org.gluster.storage.management.core.model.VolumeOption;
import org.gluster.storage.management.core.model.VolumeOptionInfo;
/**
* Editing support for the "value" column in volume options table viewer.
*/
public class OptionValueEditingSupport extends EditingSupport {
private CellEditor cellEditor;
private Volume volume;
private List<VolumeOptionInfo> defaults = GlusterDataModelManager.getInstance().getVolumeOptionsInfo();
private GUIHelper guiHelper = GUIHelper.getInstance();
public OptionValueEditingSupport(ColumnViewer viewer, Volume volume) {
super(viewer);
this.volume = volume;
this.cellEditor = new TextCellEditor((Composite) viewer.getControl());
}
@Override
protected void setValue(final Object element, final Object value) {
final VolumeOption entry = (VolumeOption)element;
final String optionKey = entry.getKey();
final String optionValue = (String)value;
final String oldValue = entry.getValue();
// It is not allowed to change value to empty string
if(optionValue.isEmpty()) {
MessageDialog.openError(Display.getDefault().getActiveShell(), "Set Volume Option",
"Option value can't be empty! Please enter a valid value.");
cellEditor.setFocus();
return;
}
if (oldValue.equals(optionValue)) {
// value is same as that present in the model. return without doing anything.
return;
}
// value has changed. set volume option at back-end and update model accordingly
guiHelper.setStatusMessage("Setting option [" + optionKey + " = " + optionValue + "]...");
getViewer().getControl().update();
BusyIndicator.showWhile(Display.getDefault(), new Runnable() {
@Override
public void run() {
VolumesClient client = new VolumesClient();
try {
client.setVolumeOption(volume.getName(), optionKey, optionValue);
GlusterDataModelManager.getInstance().setVolumeOption(volume, optionKey, optionValue);
} catch(Exception e) {
MessageDialog.openError(Display.getDefault().getActiveShell(), "Set Volume Option", e.getMessage());
}
getViewer().update(entry, null);
}
});
guiHelper.clearStatusMessage();
getViewer().getControl().update();
}
/**
* @param key Key whose default value is to be fetched
* @return Default value of the volume option with given key
*/
private String getDefaultValue(String key) {
for(VolumeOptionInfo optionInfo : defaults) {
if(optionInfo.getName().equals(key)) {
return optionInfo.getDefaultValue();
}
}
return "";
}
@Override
protected Object getValue(Object element) {
VolumeOption entry = (VolumeOption) element;
return entry.getValue().isEmpty() ? getDefaultValue(entry.getKey()) : entry.getValue();
}
@Override
protected CellEditor getCellEditor(Object element) {
return cellEditor;
}
@Override
protected boolean canEdit(Object element) {
return true;
}
}
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