From 1e51dbbe2f05f1283ad283126979a7a0ae1b7667 Mon Sep 17 00:00:00 2001
From: Daniel Rolka
Date: Tue, 17 Dec 2013 14:43:25 +0100
Subject: Bug 424037 - [CSS] Add support for the 'Active (no-focus)' MStackPart
 state

Change-Id: I6ec1407bbb6f63d0dc3b8d19268e11c2de4a4200
Signed-off-by: Daniel Rolka <daniel.rolka@pl.ibm.com>
---
 .../e4/ui/workbench/renderers/swt/WBWRenderer.java | 40 ++++++++++++++++++++++
 .../e4/ui/internal/workbench/swt/CSSConstants.java |  2 ++
 2 files changed, 42 insertions(+)

diff --git a/bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/WBWRenderer.java b/bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/WBWRenderer.java
index a7dfce90255..9dea7fefea4 100644
--- a/bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/WBWRenderer.java
+++ b/bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/WBWRenderer.java
@@ -31,12 +31,14 @@ import org.eclipse.e4.ui.css.swt.resources.SWTResourcesRegistry;
 import org.eclipse.e4.ui.internal.workbench.E4Workbench;
 import org.eclipse.e4.ui.internal.workbench.PartServiceSaveHandler;
 import org.eclipse.e4.ui.internal.workbench.renderers.swt.SWTRenderersMessages;
+import org.eclipse.e4.ui.internal.workbench.swt.CSSConstants;
 import org.eclipse.e4.ui.model.application.MApplication;
 import org.eclipse.e4.ui.model.application.ui.MContext;
 import org.eclipse.e4.ui.model.application.ui.MElementContainer;
 import org.eclipse.e4.ui.model.application.ui.MUIElement;
 import org.eclipse.e4.ui.model.application.ui.advanced.MPerspective;
 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
+import org.eclipse.e4.ui.model.application.ui.basic.MPartStack;
 import org.eclipse.e4.ui.model.application.ui.basic.MTrimBar;
 import org.eclipse.e4.ui.model.application.ui.basic.MTrimmedWindow;
 import org.eclipse.e4.ui.model.application.ui.basic.MWindow;
@@ -44,6 +46,7 @@ import org.eclipse.e4.ui.services.IServiceConstants;
 import org.eclipse.e4.ui.services.IStylingEngine;
 import org.eclipse.e4.ui.workbench.IPresentationEngine;
 import org.eclipse.e4.ui.workbench.UIEvents;
+import org.eclipse.e4.ui.workbench.modeling.EModelService;
 import org.eclipse.e4.ui.workbench.modeling.EPartService;
 import org.eclipse.e4.ui.workbench.modeling.ISaveHandler;
 import org.eclipse.e4.ui.workbench.modeling.IWindowCloseHandler;
@@ -128,6 +131,9 @@ public class WBWRenderer extends SWTPartRenderer {
 	private EventHandler sizeHandler;
 	private EventHandler themeDefinitionChanged;
 
+	@Inject
+	private EModelService modelService;
+
 	public WBWRenderer() {
 		super();
 	}
@@ -550,8 +556,42 @@ public class WBWRenderer extends SWTPartRenderer {
 							w.getContext().activate();
 						}
 					}
+					updateNonFocusState(SWT.Activate, w);
 				}
 			});
+
+			shell.addListener(SWT.Deactivate, new Listener() {
+				public void handleEvent(org.eclipse.swt.widgets.Event event) {
+					updateNonFocusState(SWT.Deactivate, w);
+				}
+			});
+		}
+	}
+
+	private void updateNonFocusState(int event, MWindow win) {
+		MPerspective perspective = modelService.getActivePerspective(win);
+		if (perspective == null) {
+			return;
+		}
+
+		List<MPartStack> stacks = modelService.findElements(perspective, null,
+				MPartStack.class, Arrays.asList(CSSConstants.CSS_ACTIVE_CLASS));
+		if (stacks.isEmpty()) {
+			return;
+		}
+
+		MPartStack stack = stacks.get(0);
+		int tagsCount = stack.getTags().size();
+		boolean hasNonFocusTag = stack.getTags().contains(
+				CSSConstants.CSS_NO_FOCUS_CLASS);
+
+		if (event == SWT.Activate && hasNonFocusTag) {
+			stack.getTags().remove(CSSConstants.CSS_NO_FOCUS_CLASS);
+		} else if (event == SWT.Deactivate && !hasNonFocusTag) {
+			stack.getTags().add(CSSConstants.CSS_NO_FOCUS_CLASS);
+		}
+		if (tagsCount != stack.getTags().size()) {
+			setCSSInfo(stack, stack.getWidget());
 		}
 	}
 
diff --git a/bundles/org.eclipse.e4.ui.workbench.swt/src/org/eclipse/e4/ui/internal/workbench/swt/CSSConstants.java b/bundles/org.eclipse.e4.ui.workbench.swt/src/org/eclipse/e4/ui/internal/workbench/swt/CSSConstants.java
index 31200c26c43..75c6ce51712 100644
--- a/bundles/org.eclipse.e4.ui.workbench.swt/src/org/eclipse/e4/ui/internal/workbench/swt/CSSConstants.java
+++ b/bundles/org.eclipse.e4.ui.workbench.swt/src/org/eclipse/e4/ui/internal/workbench/swt/CSSConstants.java
@@ -16,6 +16,8 @@ public class CSSConstants {
 
 	public static final String CSS_ACTIVE_CLASS = "active";
 
+	public static final String CSS_NO_FOCUS_CLASS = "noFocus";
+
 	public static final String CSS_HIGHLIGHTED_CLASS = "highlighted";
 
 	public static final String CSS_CONTENT_CHANGE_CLASS = "contentChange";
-- 
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