/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.uima.ruta.explain.rulelist;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.lang3.StringUtils;
import org.apache.uima.cas.Feature;
import org.apache.uima.cas.Type;
import org.apache.uima.caseditor.editor.AnnotationEditor;
import org.apache.uima.ruta.explain.ExplainConstants;
import org.apache.uima.ruta.explain.apply.ApplyTreeContentProvider;
import org.apache.uima.ruta.explain.apply.ApplyTreeLabelProvider;
import org.apache.uima.ruta.explain.apply.ApplyViewPage;
import org.apache.uima.ruta.explain.tree.ApplyRootNode;
import org.apache.uima.ruta.explain.tree.ExplainTree;
import org.apache.uima.ruta.explain.tree.IExplainTreeNode;
import org.apache.uima.ruta.explain.tree.RuleApplyNode;
import org.eclipse.jface.viewers.CheckboxTreeViewer;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IWorkbenchPart;
public class RuleListViewPage extends ApplyViewPage implements Listener {
protected Text filterTextField;
protected String manualFilter = "";
private Composite overlay;
private int offset = -1;
public RuleListViewPage(AnnotationEditor editor) {
super(editor);
}
@Override
public void createControl(Composite parent) {
this.overlay = new Composite(parent, SWT.NONE);
GridLayout layout = new GridLayout();
layout.horizontalSpacing = 0;
layout.verticalSpacing = 0;
layout.marginWidth = 0;
layout.marginHeight = 0;
// FillLayout layout = new FillLayout(SWT.VERTICAL);
overlay.setLayout(layout);
filterTextField = new Text(overlay, SWT.SINGLE | SWT.BORDER);
GridData gd = new GridData();
gd.grabExcessHorizontalSpace = true;
gd.horizontalAlignment = GridData.FILL;
gd.horizontalSpan = 1;
filterTextField.setLayoutData(gd);
filterTextField.setToolTipText("Retain types that contain...");
filterTextField.addListener(SWT.KeyUp, this);
filterTextField.addListener(SWT.MouseUp, this);
filterTextField.addListener(SWT.Modify, this);
filterTextField.setMessage("Only rules with...");
viewer = new CheckboxTreeViewer(overlay, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
gd = new GridData(GridData.FILL_BOTH);
viewer.getTree().setLayoutData(gd);
viewer.setContentProvider(new ApplyTreeContentProvider());
viewer.setLabelProvider(new ApplyTreeLabelProvider(this));
viewer.setInput(new ApplyRootNode(null, document.getCAS().getTypeSystem()));
getSite().setSelectionProvider(viewer);
getSite().getPage().addSelectionListener(this);
}
private void filterTree(ExplainTree tree) {
Type ruleType = document.getCAS().getTypeSystem().getType(ExplainConstants.RULE_APPLY_TYPE);
IExplainTreeNode root = tree.getRoot();
List<IExplainTreeNode> children = new ArrayList<IExplainTreeNode>(root.getChildren());
for (IExplainTreeNode each : children) {
if (each instanceof RuleApplyNode) {
RuleApplyNode ran = (RuleApplyNode) each;
Feature f = ruleType.getFeatureByBaseName(ExplainConstants.ELEMENT);
if (f != null) {
String v = ran.getFeatureStructure().getStringValue(f);
if (!StringUtils.isEmpty(manualFilter) && v.indexOf(manualFilter) == -1) {
root.removeChild(ran);
}
}
}
}
}
public void handleEvent(Event event) {
if (event.widget == filterTextField && event.type == SWT.Modify) {
manualFilter = filterTextField.getText();
reloadTree();
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.part.Page#dispose()
*/
@Override
public void dispose() {
super.dispose();
overlay.dispose();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.part.Page#getControl()
*/
@Override
public Control getControl() {
return overlay;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.part.Page#setFocus()
*/
@Override
public void setFocus() {
overlay.setFocus();
}
@Override
public void selectionChanged(IWorkbenchPart part, ISelection selection) {
if (selection instanceof StructuredSelection && part instanceof AnnotationEditor) {
offset = editor.getCaretOffset();
if (offset >= 0) {
reloadTree();
}
}
}
private void reloadTree() {
ExplainTree tree = new ExplainTree(document.getCAS(), offset, true);
filterTree(tree);
viewer.setInput(tree.getRoot());
viewer.refresh();
}
}