X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.workbench%2Fsrc%2Forg%2Fsimantics%2Fworkbench%2Finternal%2Fcontributions%2Fsearch%2FBrowserView.java;fp=bundles%2Forg.simantics.workbench%2Fsrc%2Forg%2Fsimantics%2Fworkbench%2Finternal%2Fcontributions%2Fsearch%2FBrowserView.java;h=87adbab7e24713f59364733f80c05fd1777741ec;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/contributions/search/BrowserView.java b/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/contributions/search/BrowserView.java
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+++ b/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/contributions/search/BrowserView.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2014 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
+ *     Semantum Oy
+ *******************************************************************************/
+package org.simantics.workbench.internal.contributions.search;
+
+import java.net.URL;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.browser.Browser;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.part.ViewPart;
+import org.simantics.Simantics;
+import org.simantics.db.Session;
+import org.simantics.db.layer0.request.ActiveModels;
+import org.simantics.db.management.ISessionContext;
+import org.simantics.db.management.ISessionContextChangedListener;
+import org.simantics.db.management.SessionContextChangedEvent;
+import org.simantics.db.service.LifecycleSupport;
+import org.simantics.utils.ui.SWTUtils;
+import org.simantics.workbench.search.ISearchService;
+import org.simantics.workbench.search.ISearchService.ResultBrowser;
+import org.simantics.workbench.search.SearchQuery;
+
+/**
+ * A very non-configurable Web browser view for search trim.
+ * 
+ * @author Tuukka Lehtonen
+ */
+public class BrowserView extends ViewPart {
+
+    /**
+     * ID of this view's plug-in extension.
+     */
+    public static final String ID = "org.simantics.workbench.search.browser";
+
+    /**
+     * Used as a property of this view to keep track of the last search query
+     * performed with this view. This information is needed to know whether or
+     * not to initialize the view with default contents after it has been
+     * created. This depends on whether the creation was caused by a simple
+     * activation of the view or an actual search being performed.
+     */
+    public static final String LAST_QUERY_PROPERTY = "org.simantics.workbench.search.browser.lastQuery";
+
+    private Browser              browser;
+    private boolean              disposed;
+    private ActiveModelsListener currentListener;
+
+    @Override
+    public void createPartControl(Composite parent) {
+        browser = new org.eclipse.swt.browser.Browser(parent, SWT.NONE);
+
+        // Ensure the view receives some browser content even when no searches
+        // have been performed yet.
+        scheduleInitializeViewContent(false);
+
+        // Make sure that the contents of the view are reset every time the set
+        // of active models changes. This must be because what is searchable depends
+        // completely on the active models. When there is no active model, the search
+        // will find nothing.
+        Simantics.getSessionContextProvider().addContextChangedListener(sessionListener);
+        trackActiveModels(Simantics.peekSession());
+    }
+
+    private ISessionContextChangedListener sessionListener = new ISessionContextChangedListener() {
+        @Override
+        public void sessionContextChanged(SessionContextChangedEvent event) {
+            ISessionContext ctx = event.getNewValue();
+            final Session newSession = ctx != null ? ctx.peekSession() : null;
+            // Synchronize session changes to the UI thread to keep threading more predictable.
+            SWTUtils.asyncExec(browser, new Runnable() {
+                @Override
+                public void run() {
+                    if (!disposed)
+                        trackActiveModels(newSession);
+                }
+            });
+        }
+    };
+
+    private void trackActiveModels(Session session) {
+        if (currentListener != null) {
+            currentListener.dispose();
+            currentListener = null;
+        }
+        if (session != null) {
+        	
+			LifecycleSupport lfs = session.peekService(LifecycleSupport.class);
+			if (lfs == null)
+				return;
+			if (lfs.isClosed())
+				return;
+        	
+            ActiveModelsListener listener = new ActiveModelsListener(new Runnable() {
+                @Override
+                public void run() {
+                    scheduleInitializeViewContent(true);
+                }
+            });
+			
+            // Make sure that the listener is disposed if the session is disposed.
+            session.registerService(ActiveModelsListener.class, listener);
+            session.asyncRequest(new ActiveModels(Simantics.getProjectResource()), listener);
+            this.currentListener = listener;
+        }
+    }
+
+    protected void scheduleInitializeViewContent(final boolean force) {
+        SWTUtils.asyncExec(browser, new Runnable() {
+            @Override
+            public void run() {
+                if (disposed)
+                    return;
+                // If SearchServiceImpl hasn't performed any queries yet,
+                // then we shall initialize the view contents at this point.
+                String lastQuery = getPartProperty(LAST_QUERY_PROPERTY);
+                if (force || lastQuery == null)
+                    initializeViewContent();
+            }
+        });
+    }
+
+    protected void initializeViewContent() {
+        SearchQuery query = new SearchQuery("");
+        query.setSearchFlag("Name", "on");
+        query.setSearchFlag("Types", "on");
+        ISearchService searchService = (ISearchService) PlatformUI.getWorkbench().getService(ISearchService.class);
+        if (searchService != null)
+            searchService.performQuery(query, ResultBrowser.VIEW, false);
+    }
+
+    @Override
+    public void dispose() {
+        disposed = true;
+        super.dispose();
+    }
+
+    public boolean isDisposed() {
+        return disposed;
+    }
+
+    @Override
+    public void setFocus() {
+        browser.setFocus();
+    }
+
+    public org.eclipse.swt.browser.Browser getBrowser() {
+        return browser;
+    }
+
+    public void setUrl(URL url) {
+        getBrowser().setUrl(url.toString());
+    }
+
+    @Override
+    public void setContentDescription(String description) {
+        super.setContentDescription(description);
+    }
+
+}