Move filters Button in Call Hierarchy view to the top level Bar (#26):

Before the changes the filters could only be accessed through the "View
Menu" (three dots), which is inconvenient considering that the filters
button is rather important and frequently used.
After the changes the filters can be accessed by clicking on the icon in
the top level bar as well as the old way through the view menu.

org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/CallHierarchyViewPart.java

@@ -244,6 +244,7 @@ protected void open(ISelection selection, boolean activate) {
 	private IPartListener2 fPartListener;
 	private boolean fIsPinned;
 	private PinCallHierarchyViewAction fPinViewAction;
+	private FiltersAction fFiltersAction;
 
 
     public CallHierarchyViewPart() {
@@ -1024,6 +1025,7 @@ private void fillActionBars() {
 		}
         toolBar.add(fHistoryDropDownAction);
         toolBar.add(fPinViewAction);
+        toolBar.add(fFiltersAction);
     }
 
     private void makeActions() {
@@ -1048,6 +1050,9 @@ private void makeActions() {
         fExpandWithConstructorsAction= new ExpandWithConstructorsAction(this, fCallHierarchyViewer);
         fRemoveFromViewAction= new RemoveFromViewAction(this, fCallHierarchyViewer);
         fPinViewAction= new PinCallHierarchyViewAction(this);
+
+        fFiltersAction = new FiltersAction(this);
+
         fToggleOrientationActions = new ToggleOrientationAction[] {
                 new ToggleOrientationAction(this, VIEW_ORIENTATION_VERTICAL),
                 new ToggleOrientationAction(this, VIEW_ORIENTATION_HORIZONTAL),

org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/FiltersAction.java

@@ -0,0 +1,46 @@
+package org.eclipse.jdt.internal.ui.callhierarchy;
+
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.window.Window;
+
+import org.eclipse.ui.PlatformUI;
+
+import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
+import org.eclipse.jdt.internal.ui.JavaPluginImages;
+
+public class FiltersAction extends  Action {
+    private CallHierarchyViewPart fPart;
+
+
+	public FiltersAction (CallHierarchyViewPart view) {
+
+
+		super();
+		fPart = view;
+		setToolTipText(CallHierarchyMessages.ShowFilterDialogAction_text);
+
+		setText(CallHierarchyMessages.ShowFilterDialogAction_text);
+        setImageDescriptor(JavaPluginImages.DESC_ELCL_FILTER);
+		setDisabledImageDescriptor(JavaPluginImages.DESC_DLCL_FILTER);
+
+		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CALL_HIERARCHY_REFRESH_VIEW_ACTION);
+
+	}
+
+	@Override
+	public void run() {
+
+		openFiltersDialog();
+
+	}
+
+    private void openFiltersDialog() {
+        FiltersDialog dialog= new FiltersDialog(
+            fPart.getViewSite().getShell());
+
+        if(Window.OK == dialog.open()) {
+        	fPart.refresh();
+        }
+    }
+
+}

org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/FiltersDialog.java

@@ -63,6 +63,7 @@ protected boolean isResizable() {
 	protected Control createDialogArea(Composite parent) {
     	Composite composite= (Composite) super.createDialogArea(parent);
 
+
         createTestCodeArea(composite);
         createNamesArea(composite);
         new Label(composite, SWT.NONE);         // Filler