X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.swt%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fswt%2FFilterArea.java;fp=bundles%2Forg.simantics.browsing.ui.swt%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fswt%2FFilterArea.java;h=25297405718a8db03a1dca7553c98aef732e4a4b;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08
diff --git a/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/FilterArea.java b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/FilterArea.java
new file mode 100644
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+++ b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/FilterArea.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.browsing.ui.swt;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.eclipse.jface.layout.GridDataFactory;
+import org.eclipse.jface.layout.GridLayoutFactory;
+import org.eclipse.jface.resource.FontDescriptor;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.jface.resource.JFaceResources;
+import org.eclipse.jface.resource.LocalResourceManager;
+import org.eclipse.jface.viewers.IPostSelectionProvider;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionChangedListener;
+import org.eclipse.jface.viewers.SelectionChangedEvent;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.accessibility.ACC;
+import org.eclipse.swt.accessibility.AccessibleAdapter;
+import org.eclipse.swt.accessibility.AccessibleControlAdapter;
+import org.eclipse.swt.accessibility.AccessibleControlEvent;
+import org.eclipse.swt.accessibility.AccessibleEvent;
+import org.eclipse.swt.events.ModifyEvent;
+import org.eclipse.swt.events.ModifyListener;
+import org.eclipse.swt.events.MouseAdapter;
+import org.eclipse.swt.events.MouseEvent;
+import org.eclipse.swt.events.MouseMoveListener;
+import org.eclipse.swt.events.MouseTrackListener;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Label;
+import org.eclipse.swt.widgets.Text;
+import org.eclipse.ui.ISharedImages;
+import org.eclipse.ui.internal.WorkbenchImages;
+import org.eclipse.ui.internal.WorkbenchMessages;
+import org.simantics.browsing.ui.GraphExplorer;
+import org.simantics.browsing.ui.NodeContext;
+import org.simantics.browsing.ui.common.processors.FilterSelectionRequestQueryProcessor;
+import org.simantics.browsing.ui.common.views.IFilterArea;
+import org.simantics.browsing.ui.common.views.IFilterAreaProvider;
+import org.simantics.browsing.ui.common.views.IFocusable;
+import org.simantics.db.layer0.SelectionHints;
+import org.simantics.utils.threads.SWTThread;
+import org.simantics.utils.threads.ThreadUtils;
+import org.simantics.utils.ui.ISelectionUtils;
+
+@SuppressWarnings("restriction")
+public class FilterArea extends Composite implements IFocusable, IFilterArea, IFilterAreaProvider {
+
+ protected static final Integer FILTER_DELAY = 500;
+
+ private final LocalResourceManager resourceManager;
+
+ protected GraphExplorer explorer;
+
+ protected FilterSelectionRequestQueryProcessor queryProcessor;
+
+ private Text filterText;
+ private NodeContext currentContext;
+
+ /**
+ * The control representing the clear button for the filter text entry. This
+ * value may be null
if no such button exists, or if the
+ * controls have not yet been created.
+ */
+ protected Control clearButtonControl;
+
+ /**
+ * Construct the filter area UI component.
+ *
+ * @param explorer
+ * @param queryProcessor
+ * @param parent
+ * @param style
+ */
+ public FilterArea(final GraphExplorer explorer, final FilterSelectionRequestQueryProcessor queryProcessor, Composite parent, int style) {
+ super(parent, style | SWT.BORDER);
+
+ this.explorer = explorer;
+ this.queryProcessor = queryProcessor;
+
+ resourceManager = new LocalResourceManager(JFaceResources.getResources(parent.getDisplay()), this);
+
+ GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(this);
+ GridLayoutFactory.fillDefaults().margins(0, 0).spacing(0, 0).numColumns(2).equalWidth(false).applyTo(this);
+
+ createFilterText(this);
+ createFilterCancelIcon(this);
+
+ this.setBackground(filterText.getBackground());
+
+ addTextModifyListener();
+ addExplorerSelectionListener();
+ }
+
+ private void createFilterText(FilterArea filterArea) {
+ //filterText = new Text(this, SWT.SINGLE | SWT.FLAT | SWT.SEARCH | SWT.ICON_CANCEL);
+ filterText = new Text(this, SWT.SINGLE | SWT.ICON_CANCEL);
+ GridDataFactory.fillDefaults().grab(true, false).applyTo(filterText);
+
+ filterText.setFont(resourceManager.createFont(FontDescriptor.createFrom(filterText.getFont()).increaseHeight(-1)));
+
+ // if we're using a field with built in cancel we need to listen for
+ // default selection changes (which tell us the cancel button has been
+ // pressed)
+ if ((filterText.getStyle() & SWT.ICON_CANCEL) != 0) {
+ filterText.addSelectionListener(new SelectionAdapter() {
+ @Override
+ public void widgetDefaultSelected(SelectionEvent e) {
+ if (e.detail == SWT.ICON_CANCEL)
+ clearText();
+ }
+ });
+ }
+
+ GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, true);
+
+ // if the text widget supported cancel then it will have it's own
+ // integrated button. We can take all of the space.
+ if ((filterText.getStyle() & SWT.ICON_CANCEL) != 0)
+ gridData.horizontalSpan = 2;
+ filterText.setLayoutData(gridData);
+ }
+
+ private void createFilterCancelIcon(Composite parent) {
+ // only create the button if the text widget doesn't support one
+ // natively
+ if ((filterText.getStyle() & SWT.ICON_CANCEL) == 0) {
+ final Image inactiveImage = WorkbenchImages.getImage(ISharedImages.IMG_ETOOL_CLEAR_DISABLED);
+ final Image activeImage = WorkbenchImages.getImage(ISharedImages.IMG_ETOOL_CLEAR);
+ final Image pressedImage = (Image) resourceManager.get( ImageDescriptor.createWithFlags( ImageDescriptor.createFromImage( activeImage ), SWT.IMAGE_GRAY ) );
+
+ final Label clearButton= new Label(parent, SWT.NONE);
+ clearButton.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false));
+ clearButton.setImage(inactiveImage);
+ clearButton.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
+ clearButton.setToolTipText(WorkbenchMessages.FilteredTree_ClearToolTip);
+ clearButton.addMouseListener(new MouseAdapter() {
+ private MouseMoveListener fMoveListener;
+
+ @Override
+ public void mouseDown(MouseEvent e) {
+ clearButton.setImage(pressedImage);
+ fMoveListener= new MouseMoveListener() {
+ private boolean fMouseInButton= true;
+
+ @Override
+ public void mouseMove(MouseEvent e) {
+ boolean mouseInButton= isMouseInButton(e);
+ if (mouseInButton != fMouseInButton) {
+ fMouseInButton= mouseInButton;
+ clearButton.setImage(mouseInButton ? pressedImage : inactiveImage);
+ }
+ }
+ };
+ clearButton.addMouseMoveListener(fMoveListener);
+ }
+
+ @Override
+ public void mouseUp(MouseEvent e) {
+ if (fMoveListener != null) {
+ clearButton.removeMouseMoveListener(fMoveListener);
+ fMoveListener= null;
+ boolean mouseInButton= isMouseInButton(e);
+ clearButton.setImage(mouseInButton ? activeImage : inactiveImage);
+ if (mouseInButton) {
+ clearText();
+ filterText.setFocus();
+ }
+ }
+ }
+
+ private boolean isMouseInButton(MouseEvent e) {
+ Point buttonSize = clearButton.getSize();
+ return 0 <= e.x && e.x < buttonSize.x && 0 <= e.y && e.y < buttonSize.y;
+ }
+ });
+ clearButton.addMouseTrackListener(new MouseTrackListener() {
+ @Override
+ public void mouseEnter(MouseEvent e) {
+ clearButton.setImage(activeImage);
+ }
+
+ @Override
+ public void mouseExit(MouseEvent e) {
+ clearButton.setImage(inactiveImage);
+ }
+
+ @Override
+ public void mouseHover(MouseEvent e) {
+ }
+ });
+ clearButton.getAccessible().addAccessibleListener(
+ new AccessibleAdapter() {
+ @Override
+ public void getName(AccessibleEvent e) {
+ e.result= WorkbenchMessages.FilteredTree_AccessibleListenerClearButton;
+ }
+ });
+ clearButton.getAccessible().addAccessibleControlListener(
+ new AccessibleControlAdapter() {
+ @Override
+ public void getRole(AccessibleControlEvent e) {
+ e.detail= ACC.ROLE_PUSHBUTTON;
+ }
+ });
+ this.clearButtonControl = clearButton;
+ }
+ }
+
+ /**
+ * Clears the text in the filter text widget.
+ */
+ protected void clearText() {
+ //System.out.println("clearText");
+ filterText.setText(""); //$NON-NLS-1$
+ // TODO: HACK: this can be used to access filter for root context
+ explorer.select(null);
+ //textChanged();
+ }
+
+ protected void addTextModifyListener() {
+ filterText.addModifyListener(new ModifyListener() {
+
+ Map modCount = new HashMap();
+
+ @Override
+ public void modifyText(ModifyEvent e) {
+
+ final NodeContext context = getFilteredNode();
+ if (context == null)
+ return;
+
+ final String filter = filterText.getText();
+ //System.out.println("Scheduling setFilter(" + context + ", " + filter + ")");
+
+ AtomicInteger i = modCount.get(context);
+ if (i == null)
+ modCount.put(context, new AtomicInteger());
+ final AtomicInteger counter = modCount.get(context);
+ final int count = counter.incrementAndGet();
+
+ ThreadUtils.getNonBlockingWorkExecutor().schedule(new Runnable() {
+ @Override
+ public void run() {
+ int newCount = counter.get();
+ if (newCount != count)
+ return;
+ //System.out.println("schedule setFilter(" + context + ", " + filter + ")");
+ modCount.remove(context);
+ if (isDisposed())
+ return;
+ ThreadUtils.asyncExec(SWTThread.getThreadAccess(getDisplay()), new Runnable() {
+ @Override
+ public void run() {
+ if (isDisposed())
+ return;
+ //System.out.println("queryProcessor.setFilter(" + context + ", " + filter + ")");
+ queryProcessor.setFilter(context, filter.isEmpty() ? null : filter);
+ }
+ });
+ }
+ }, FILTER_DELAY, TimeUnit.MILLISECONDS);
+ }
+ });
+ }
+
+ protected void addExplorerSelectionListener() {
+ IPostSelectionProvider selectionProvider = (IPostSelectionProvider)explorer.getAdapter(IPostSelectionProvider.class);
+ selectionProvider.addSelectionChangedListener(new ISelectionChangedListener() {
+ @Override
+ public void selectionChanged(SelectionChangedEvent event) {
+
+ ISelection selection = event.getSelection();
+ NodeContext context = ISelectionUtils.getSinglePossibleKey(selection, SelectionHints.KEY_MAIN, NodeContext.class);
+ if(context == null) {
+ context = ISelectionUtils.filterSingleSelection(selection, NodeContext.class);
+ }
+
+ if (context == null) {
+ context = explorer.getRoot();
+ }
+
+ assert (context != null);
+
+ String filter = queryProcessor.getFilter(context);
+
+ if (filter == null)
+ filter = "";
+
+ //filterText.setData(null);
+ //System.out.println("selection changed, new filter: " + filter + " for context " + context + ", currentContext=" + currentContext);
+ currentContext = context;
+ filterText.setText(filter);
+ //filterText.setData("context", context);
+ }
+ });
+ }
+
+ protected NodeContext getFilteredNode() {
+ if(currentContext != null) return currentContext;
+ else return explorer.getRoot();
+// return currentContext;
+// NodeContext context = (NodeContext)filterText.getData("context");
+// if (context == null)
+// context = explorer.getRoot();
+// return context;
+
+ }
+
+ @Override
+ public void focus() {
+ if (filterText.isDisposed())
+ return;
+ Display d = filterText.getDisplay();
+ if (d.getThread() == Thread.currentThread()) {
+ doSetFocus();
+ } else {
+ d.asyncExec(new Runnable() {
+ @Override
+ public void run() {
+ if (filterText.isDisposed())
+ return;
+ doSetFocus();
+ }
+ });
+ }
+ }
+
+ @Override
+ public void dispose() {
+
+ if (isDisposed())
+ return;
+
+ resourceManager.dispose();
+ explorer = null;
+ queryProcessor = null;
+ filterText = null;
+ currentContext = null;
+ clearButtonControl = null;
+
+ super.dispose();
+
+ }
+
+ protected void doSetFocus() {
+ filterText.selectAll();
+ filterText.setFocus();
+ }
+
+ @Override
+ public IFilterArea getFilterArea() {
+ return this;
+ }
+
+}