Examples with ImageLoaderListener org.eclipse.swt.graphics.ImageLoaderListener used on opensource projects

Example 1 with ImageLoaderListener

use of org.eclipse.swt.graphics.ImageLoaderListener in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_graphics_ImageLoader method test_addImageLoaderListenerLorg_eclipse_swt_graphics_ImageLoaderListener.

@Test
public void test_addImageLoaderListenerLorg_eclipse_swt_graphics_ImageLoaderListener() {
    ImageLoader loader = new ImageLoader();
    ImageLoaderListener loaderListener = e -> loaderListenerCalled = true;
    try {
        loader.addImageLoaderListener(null);
        fail("No exception thrown for addImageLoaderListener with null argument");
    } catch (IllegalArgumentException e) {
    }
    assertFalse(":a:", loader.hasListeners());
    loader.addImageLoaderListener(loaderListener);
    assertTrue(":b:", loader.hasListeners());
    loaderListenerCalled = false;
    try (InputStream stream = SwtTestUtil.class.getResourceAsStream("interlaced_target.png")) {
        loader.load(stream);
    } catch (IOException e) {
    }
    assertTrue(":c:", loaderListenerCalled);
    loaderListenerCalled = false;
    try (InputStream stream = SwtTestUtil.class.getResourceAsStream("target.png")) {
        loader.load(stream);
    } catch (IOException e) {
    }
    assertFalse(":d:", loaderListenerCalled);
    loaderListenerCalled = false;
    loader.notifyListeners(new ImageLoaderEvent(loader, loader.data[0], 0, true));
    assertTrue(":e:", loaderListenerCalled);
    loader.removeImageLoaderListener(loaderListener);
    assertFalse(":f:", loader.hasListeners());
}