/*******************************************************************************
 * Copyright (c) 2000, 2007 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.tests.internal;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.jface.action.CoolBarManager;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IContributionItem;
import org.eclipse.jface.action.ICoolBarManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.action.ToolBarContributionItem;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.internal.WorkbenchWindow;
import org.eclipse.ui.part.FileEditorInput;
import org.eclipse.ui.tests.api.MockAction;
import org.eclipse.ui.tests.api.MockEditorActionBarContributor;
import org.eclipse.ui.tests.api.MockEditorPart;
import org.eclipse.ui.tests.api.MockViewPart;
import org.eclipse.ui.tests.harness.util.FileUtil;
import org.eclipse.ui.tests.harness.util.UITestCase;

/**
 * This class contains tests for the editor action bars
 * implementation.
 */
public class EditorActionBarsTest extends UITestCase {

    protected IWorkbenchWindow fWindow;

    protected IWorkbenchPage fPage;

    private String EDITOR_ID = "org.eclipse.ui.tests.internal.EditorActionBarsTest";

    /**
     * Constructor for IEditorPartTest
     */
    public EditorActionBarsTest(String testName) {
        super(testName);
    }

    protected void doSetUp() throws Exception {
        super.doSetUp();
        fWindow = openTestWindow();
        fPage = fWindow.getActivePage();
    }

    /**
     * Test action enablement / disablement when a
     * part is active.
     * <p>
     * Created for PR 1GJNB52: ToolItems in EditorToolBarManager can get 
     * out of synch with the state of the IAction
     * </p>
     */
    public void testActionEnablementWhenActive() throws Throwable {
        // Open an editor.
        MockEditorPart editor = openEditor(fPage, "1");
        MockEditorActionBarContributor contributor = (MockEditorActionBarContributor) editor
                .getEditorSite().getActionBarContributor();

        // Enable all actions.
        contributor.enableActions(true);
        verifyToolItemState(contributor, true);

        // Disable all actions.
        contributor.enableActions(false);
        verifyToolItemState(contributor, false);
    }

    /**
     * Test action enablement / disablement when a
     * part is inactive.
     * <p>
     * Created for PR 1GJNB52: ToolItems in EditorToolBarManager can get 
     * out of synch with the state of the IAction
     * </p>
     */
    public void testActionEnablementWhenInactive() throws Throwable {
        // Open an editor.
        MockEditorPart editor = openEditor(fPage, "2");
        MockEditorActionBarContributor contributor = (MockEditorActionBarContributor) editor
                .getEditorSite().getActionBarContributor();

        // Enable all actions.
        contributor.enableActions(true);
        verifyToolItemState(contributor, true);

        // Activate some other part.  Disable the actions.
        // Then activate the editor and test tool item state.
        fPage.showView(MockViewPart.ID);
        contributor.enableActions(false);
        fPage.activate(editor);
        verifyToolItemState(contributor, false);

        // Activate some other part.  Enable the actions.
        // Then activate the editor and test tool item state.
        fPage.showView(MockViewPart.ID);
        contributor.enableActions(true);
        fPage.activate(editor);
        verifyToolItemState(contributor, true);
    }

    /**
     * Open a test editor.
     */
    protected MockEditorPart openEditor(IWorkbenchPage page, String suffix)
            throws Throwable {
        IProject proj = FileUtil.createProject("IEditorActionBarsTest");
        IFile file = FileUtil.createFile("test" + suffix + ".txt", proj);
        return (MockEditorPart) page.openEditor(new FileEditorInput(file),
                EDITOR_ID);
    }

    /**
     * Tests whether actions are enabled.
     */
    protected void verifyToolItemState(MockEditorActionBarContributor ctr,
            boolean enabled) {
        MockAction[] actions = ctr.getActions();
        for (int nX = 0; nX < actions.length; nX++)
            verifyToolItemState(actions[nX], enabled);
    }

    /**
     * Tests whether an action is enabled.
     */
    protected void verifyToolItemState(IAction action, boolean enabled) {
        String actionText = action.getText();
        ICoolBarManager tbm = ((WorkbenchWindow) fWindow).getCoolBarManager();
        IContributionItem[] coolItems = tbm.getItems();
        for (int i = 0; i < coolItems.length; ++i) {
            if (coolItems[i] instanceof ToolBarContributionItem) {
                ToolBarContributionItem coolItem = (ToolBarContributionItem) coolItems[i];
                IToolBarManager citbm = coolItem.getToolBarManager();
                ToolBar tb = ((ToolBarManager) citbm).getControl();
                verifyNullToolbar(tb, actionText, citbm);
                if (tb != null && !tb.isDisposed()) {
                    ToolItem[] items = tb.getItems();
                    for (int j = 0; j < items.length; j++) {
                        String itemText = items[j].getToolTipText();
                        if (actionText.equals(itemText)) {
                            assertEquals(enabled, items[j].getEnabled());
                            return;
                        }
                    }
                }
            }
        }
        fail("Action for " + actionText + " not found");
    }

    /**
     * Confirms that a ToolBar is not null when you're looking a manager that 
     * is a CoolItemToolBarManager and it has non-separator/non-invisible 
     * contributions.
     * This is a consequence of the changes made to 
     * CoolItemToolBarManager.update() that hides the a bar if it does not
     * contain anything as per the above mentioned criteria.  Under this 
     * circumstance, the underlying ToolBar is not created.
     * 
     * @param tb the ToolBar to check
     * @param actionText the action text
     * @param manager the IToolBarManager containing items
     * @since 3.0
     */
    private void verifyNullToolbar(ToolBar tb, String actionText,
            IToolBarManager manager) {
        if (tb == null) { // toolbar should only be null if the given manager is
            // a CoolBarManager and it contains only separators or invisible 
            // objects.  
            IContributionItem[] items = manager.getItems();
            for (int i = 0; i < items.length; i++) {
                if (!(items[i] instanceof Separator) && items[i].isVisible()) {
                    fail("No toolbar for a visible action text \"" + actionText
                            + "\"");
                }
            }

        }
    }

    /**
     * Tests an edge case in cool bar updating when the cool bar has a single separator 
     * and no other contents (or multiple separators and no other contents). 
     * See bug 239945 for details.
     * @throws Throwable
     */
    public void test239945() throws Throwable {
    	// Test a cool bar with a single separator
		CoolBarManager coolBarManager = new CoolBarManager();
		coolBarManager.add(new Separator(CoolBarManager.USER_SEPARATOR));
		try {
			coolBarManager.createControl(fWindow.getShell());
			coolBarManager.update(true);
		} catch (ArrayIndexOutOfBoundsException e) {
			fail("Exception updating cool bar with a single separator");
		}

    	// Test a cool bar with multiple separators
		CoolBarManager coolBarManager2 = new CoolBarManager();
		coolBarManager2.add(new Separator(CoolBarManager.USER_SEPARATOR));
		try {
			coolBarManager2.createControl(fWindow.getShell());
			coolBarManager2.update(true);
		} catch (ArrayIndexOutOfBoundsException e) {
			fail("Exception updating cool bar with multiple separators");
		}
    }
}