org.eclipse.ui.tests.preferences.ZoomAndPreferencesFontTest.java Source code

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Here is the source code for org.eclipse.ui.tests.preferences.ZoomAndPreferencesFontTest.java

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/*******************************************************************************
 * Copyright (c) 2015, Red Hat Inc.
 * 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:
 *     Mickael Istria (Red Hat Inc.)
 *******************************************************************************/
package org.eclipse.ui.tests.preferences;

import java.io.ByteArrayInputStream;
import java.util.Collections;

import org.eclipse.core.commands.Command;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.jface.resource.FontDescriptor;
import org.eclipse.jface.resource.FontRegistry;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IEditorDescriptor;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.commands.ICommandService;
import org.eclipse.ui.internal.themes.ColorsAndFontsPreferencePage;
import org.eclipse.ui.part.FileEditorInput;
import org.eclipse.ui.texteditor.AbstractTextEditor;
import org.junit.After;
import org.junit.Assert;
import org.junit.Assume;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

/**
 * @since 3.11
 *
 */
public class ZoomAndPreferencesFontTest {

    private static IProject project;
    private static IFile file;

    private StyledText text;
    private AbstractTextEditor editor;
    private int initialFontHeight;

    @BeforeClass
    public static void createFilesAndOpenEditor() throws Exception {
        project = ResourcesPlugin.getWorkspace().getRoot()
                .getProject(ZoomAndPreferencesFontTest.class.getSimpleName());
        project.create(new NullProgressMonitor());
        project.open(new NullProgressMonitor());
        file = project.getFile(ZoomAndPreferencesFontTest.class.getSimpleName() + ".txt"); // $NON-NLS-1$
        file.create(new ByteArrayInputStream(ZoomAndPreferencesFontTest.class.getSimpleName().getBytes()), true,
                new NullProgressMonitor());
    }

    @Before
    public void openEditor() throws Exception {
        IEditorDescriptor desc = PlatformUI.getWorkbench().getEditorRegistry().getDefaultEditor(file.getName());
        editor = (AbstractTextEditor) PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage()
                .openEditor(new FileEditorInput(file), desc.getId());
        editor.setFocus();
        text = (StyledText) editor.getAdapter(Control.class);
        // assume we start on a clean state
        initialFontHeight = text.getFont().getFontData()[0].getHeight();
    }

    @After
    public void restoreAndCheckDefaults() {
        PreferenceDialog dialog = new PreferenceDialog(Display.getCurrent().getActiveShell(),
                PlatformUI.getWorkbench().getPreferenceManager());
        dialog.setSelectedNode("org.eclipse.ui.preferencePages.ColorsAndFonts");
        dialog.setBlockOnOpen(false);
        dialog.open();
        ColorsAndFontsPreferencePage page = (ColorsAndFontsPreferencePage) dialog.getSelectedPage();
        page.performDefaults();
        page.performOk();
        dialog.close();
        // make sure we land on a clean state
        Assert.assertEquals(initialFontHeight, text.getFont().getFontData()[0].getHeight());
        editor.close(false);
    }

    @Test
    public void testThemeAPIvsPreferences() {
        int targetHeight = 17; // Whatever > 0 and not default size/10
        FontRegistry registry = editor.getSite().getWorkbenchWindow().getWorkbench().getThemeManager()
                .getCurrentTheme().getFontRegistry();
        FontData[] data = registry.getFontData(JFaceResources.TEXT_FONT);
        FontDescriptor desc = FontDescriptor.createFrom(data).setHeight(targetHeight);
        registry.put(JFaceResources.TEXT_FONT, desc.getFontData());
        Assert.assertEquals(targetHeight, text.getFont().getFontData()[0].getHeight());
        restoreAndCheckDefaults();
    }

    @Test
    public void testZoomCommand() throws Exception {
        Command command = null;
        command = PlatformUI.getWorkbench().getService(ICommandService.class)
                .getCommand("org.eclipse.ui.edit.text.zoomIn");
        Assume.assumeNotNull(command);
        Assume.assumeTrue("Command must be defined for this test to run", command.isDefined());

        int times = 6;
        for (int i = 0; i < times; i++) {
            command.executeWithChecks(new ExecutionEvent(command, Collections.EMPTY_MAP, null, null));
        }
        Assert.assertEquals(initialFontHeight + times * 2, text.getFont().getFontData()[0].getHeight());
    }

}