// This test checks that the edit command enabled state (cut/paste) is updated
// properly when the edit controls are on the toolbar, popup and not present.
// It also verifies that the performance optimiation implemented by
// updateEditUIVisibility in browser.js is applied.

let isMac = navigator.platform.indexOf("Mac") == 0;

function checkState(allowCut, desc, testWindow = window) {
  is(
    testWindow.document.getElementById("cmd_cut").getAttribute("disabled") ==
      "true",
    !allowCut,
    desc + " - cut"
  );
  is(
    testWindow.document.getElementById("cmd_paste").getAttribute("disabled") ==
      "true",
    false,
    desc + " - paste"
  );
}

// Add a special controller to the urlbar and browser to listen in on when
// commands are being updated. Return a promise that resolves when 'count'
// updates have occurred.
function expectCommandUpdate(count, testWindow = window) {
  return new Promise((resolve, reject) => {
    let overrideController = {
      supportsCommand(cmd) {
        return cmd == "cmd_delete";
      },
      isCommandEnabled(cmd) {
        if (!count) {
          ok(false, "unexpected update");
          reject();
        }

        if (!--count) {
          testWindow.gURLBar.inputField.controllers.removeControllerAt(
            0,
            overrideController
          );
          testWindow.gBrowser.selectedBrowser.controllers.removeControllerAt(
            0,
            overrideController
          );
          resolve(true);
        }
      },
    };

    if (!count) {
      SimpleTest.executeSoon(() => {
        testWindow.gURLBar.inputField.controllers.removeControllerAt(
          0,
          overrideController
        );
        testWindow.gBrowser.selectedBrowser.controllers.removeControllerAt(
          0,
          overrideController
        );
        resolve(false);
      });
    }

    testWindow.gURLBar.inputField.controllers.insertControllerAt(
      0,
      overrideController
    );
    testWindow.gBrowser.selectedBrowser.controllers.insertControllerAt(
      0,
      overrideController
    );
  });
}

// Call this between `.select()` to make sure the selection actually changes
// and thus TextInputListener::UpdateTextInputCommands() is called.
function deselectURLBarAndSpin() {
  gURLBar.inputField.setSelectionRange(0, 0);
  return new Promise(setTimeout);
}

add_task(async function test_init() {
  // Put something on the clipboard to verify that the paste button is properly enabled during the test.
  let clipboardHelper = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(
    Ci.nsIClipboardHelper
  );
  await new Promise(resolve => {
    SimpleTest.waitForClipboard(
      "Sample",
      function () {
        clipboardHelper.copyString("Sample");
      },
      resolve
    );
  });

  // Open and close the panel first so that it is fully initialized.
  await gCUITestUtils.openMainMenu();
  await gCUITestUtils.hideMainMenu();
});

// Test updating when the panel is open with the edit-controls on the panel.
// Updates should occur.
add_task(async function test_panelui_opened() {
  document.commandDispatcher.unlock();
  gURLBar.focus();
  gURLBar.value = "test";

  await gCUITestUtils.openMainMenu();

  checkState(false, "Update when edit-controls is on panel and visible");

  let overridePromise = expectCommandUpdate(1);
  gURLBar.select();
  await overridePromise;

  checkState(
    true,
    "Update when edit-controls is on panel and selection changed"
  );

  overridePromise = expectCommandUpdate(0);
  await gCUITestUtils.hideMainMenu();
  await overridePromise;

  // Check that updates do not occur after the panel has been closed.
  checkState(true, "Update when edit-controls is on panel and hidden");

  // Mac will update the enabled state even when the panel is closed so that
  // main menubar shortcuts will work properly.
  await deselectURLBarAndSpin();
  overridePromise = expectCommandUpdate(isMac ? 1 : 0);
  gURLBar.select();
  await overridePromise;
  checkState(
    true,
    "Update when edit-controls is on panel, hidden and selection changed"
  );
});

// Test updating when the edit-controls are moved to the toolbar.
add_task(async function test_panelui_customize_to_toolbar() {
  await startCustomizing();
  let navbar = document.getElementById("nav-bar");
  simulateItemDrag(
    document.getElementById("edit-controls"),
    CustomizableUI.getCustomizationTarget(navbar),
    "end"
  );
  await endCustomizing();

  // updateEditUIVisibility should be called when customization ends but isn't. See bug 1359790.
  updateEditUIVisibility();

  // The URL bar may have been focused to begin with, which means
  // that subsequent calls to focus it won't result in command
  // updates, so we'll make sure to blur it.
  gURLBar.blur();

  let overridePromise = expectCommandUpdate(1);
  gURLBar.select();
  gURLBar.focus();
  gURLBar.value = "other";
  await overridePromise;
  checkState(false, "Update when edit-controls on toolbar and focused");

  await deselectURLBarAndSpin();
  overridePromise = expectCommandUpdate(1);
  gURLBar.select();
  await overridePromise;
  checkState(
    true,
    "Update when edit-controls on toolbar and selection changed"
  );

  const kOverflowPanel = document.getElementById("widget-overflow");

  let originalWidth = window.outerWidth;
  registerCleanupFunction(async function () {
    kOverflowPanel.removeAttribute("animate");
    window.resizeTo(originalWidth, window.outerHeight);
    await TestUtils.waitForCondition(() => !navbar.hasAttribute("overflowing"));
    CustomizableUI.reset();
  });

  window.resizeTo(kForceOverflowWidthPx, window.outerHeight);
  await TestUtils.waitForCondition(
    () =>
      navbar.hasAttribute("overflowing") &&
      !navbar.querySelector("edit-controls")
  );

  // Mac will update the enabled state even when the buttons are overflowing,
  // so main menubar shortcuts will work properly.
  await deselectURLBarAndSpin();
  overridePromise = expectCommandUpdate(isMac ? 1 : 0);
  gURLBar.select();
  await overridePromise;
  checkState(
    true,
    "Update when edit-controls is on overflow panel, hidden and selection changed"
  );

  // Check that we get an update if we select content while the panel is open.
  await deselectURLBarAndSpin();
  overridePromise = expectCommandUpdate(1);
  await navbar.overflowable.show();
  gURLBar.select();
  await overridePromise;

  // And that we don't (except on mac) when the panel is hidden.
  kOverflowPanel.hidePopup();
  await deselectURLBarAndSpin();
  overridePromise = expectCommandUpdate(isMac ? 1 : 0);
  gURLBar.select();
  await overridePromise;

  window.resizeTo(originalWidth, window.outerHeight);
  await TestUtils.waitForCondition(() => !navbar.hasAttribute("overflowing"));

  CustomizableUI.addWidgetToArea(
    "edit-controls",
    CustomizableUI.AREA_FIXED_OVERFLOW_PANEL
  );
  // updateEditUIVisibility should be called when customization happens but isn't. See bug 1359790.
  updateEditUIVisibility();

  await deselectURLBarAndSpin();
  overridePromise = expectCommandUpdate(isMac ? 1 : 0);
  gURLBar.select();
  await overridePromise;

  // Check that we get an update if we select content while the panel is open.
  await deselectURLBarAndSpin();
  overridePromise = expectCommandUpdate(1);
  await navbar.overflowable.show();
  gURLBar.select();
  await overridePromise;

  // And that we don't (except on mac) when the panel is hidden.
  kOverflowPanel.hidePopup();
  await deselectURLBarAndSpin();
  overridePromise = expectCommandUpdate(isMac ? 1 : 0);
  gURLBar.select();
  await overridePromise;
});

// Test updating when the edit-controls are moved to the palette.
add_task(async function test_panelui_customize_to_palette() {
  await startCustomizing();
  let palette = document.getElementById("customization-palette");
  simulateItemDrag(document.getElementById("edit-controls"), palette);
  await endCustomizing();

  // updateEditUIVisibility should be called when customization ends but isn't. See bug 1359790.
  updateEditUIVisibility();

  let overridePromise = expectCommandUpdate(isMac ? 1 : 0);
  gURLBar.focus();
  gURLBar.value = "other";
  gURLBar.select();
  await overridePromise;

  // If the UI isn't found, the command is set to be enabled.
  checkState(
    true,
    "Update when edit-controls is on palette, hidden and selection changed"
  );
});

add_task(async function finish() {
  await resetCustomization();
});

// Test updating in the initial state when the edit-controls are on the panel but
// have not yet been created. This needs to be done in a new window to ensure that
// other tests haven't opened the panel.
add_task(async function test_initial_state() {
  let testWindow = await BrowserTestUtils.openNewBrowserWindow();
  await SimpleTest.promiseFocus(testWindow);

  // For focusing the URL bar to have an effect, we need to ensure the URL bar isn't
  // initially focused:
  testWindow.gBrowser.selectedTab.focus();
  await TestUtils.waitForCondition(() => !testWindow.gURLBar.focused);

  let overridePromise = expectCommandUpdate(isMac, testWindow);

  testWindow.gURLBar.focus();
  testWindow.gURLBar.value = "test";

  await overridePromise;

  // Commands won't update when no edit UI is present. They default to being
  // enabled so that keyboard shortcuts will work. The real enabled state will
  // be checked when shortcut is pressed.
  checkState(
    !isMac,
    "No update when edit-controls is on panel and not visible",
    testWindow
  );

  await BrowserTestUtils.closeWindow(testWindow);
  await SimpleTest.promiseFocus(window);
});
