/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";

// Test the eyedropper mouse and keyboard handling.

const HIGHLIGHTER_TYPE = "EyeDropper";
const ID = "eye-dropper-";
const TEST_URI = `
<style>
  html{width:100%;height:100%;}
</style>
<body>eye-dropper test</body>`;

const MOVE_EVENTS_DATA = [
  { type: "mouse", x: 200, y: 100, expected: { x: 200, y: 100 } },
  { type: "mouse", x: 100, y: 200, expected: { x: 100, y: 200 } },
  { type: "keyboard", key: "VK_LEFT", expected: { x: 99, y: 200 } },
  {
    type: "keyboard",
    key: "VK_LEFT",
    shift: true,
    expected: { x: 89, y: 200 },
  },
  { type: "keyboard", key: "VK_RIGHT", expected: { x: 90, y: 200 } },
  {
    type: "keyboard",
    key: "VK_RIGHT",
    shift: true,
    expected: { x: 100, y: 200 },
  },
  { type: "keyboard", key: "VK_DOWN", expected: { x: 100, y: 201 } },
  {
    type: "keyboard",
    key: "VK_DOWN",
    shift: true,
    expected: { x: 100, y: 211 },
  },
  { type: "keyboard", key: "VK_UP", expected: { x: 100, y: 210 } },
  { type: "keyboard", key: "VK_UP", shift: true, expected: { x: 100, y: 200 } },
  // Mouse initialization for left and top snapping
  { type: "mouse", x: 7, y: 7, expected: { x: 7, y: 7 } },
  // Left Snapping
  {
    type: "keyboard",
    key: "VK_LEFT",
    shift: true,
    expected: { x: 0, y: 7 },
    desc: "Left Snapping to x=0",
  },
  // Top Snapping
  {
    type: "keyboard",
    key: "VK_UP",
    shift: true,
    expected: { x: 0, y: 0 },
    desc: "Top Snapping to y=0",
  },
  // Mouse initialization for right snapping
  {
    type: "mouse",
    x: (width, height) => width - 5,
    y: 0,
    expected: {
      x: (width, height) => width - 5,
      y: 0,
    },
  },
  // Right snapping
  {
    type: "keyboard",
    key: "VK_RIGHT",
    shift: true,
    expected: {
      x: (width, height) => width,
      y: 0,
    },
    desc: "Right snapping to x=max window width available",
  },
  // Mouse initialization for bottom snapping
  {
    type: "mouse",
    x: 0,
    y: (width, height) => height - 5,
    expected: {
      x: 0,
      y: (width, height) => height - 5,
    },
  },
  // Bottom snapping
  {
    type: "keyboard",
    key: "VK_DOWN",
    shift: true,
    expected: {
      x: 0,
      y: (width, height) => height,
    },
    desc: "Bottom snapping to y=max window height available",
  },
];

add_task(async function() {
  const { inspector, highlighterTestFront } = await openInspectorForURL(
    "data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI)
  );
  const helper = await getHighlighterHelperFor(HIGHLIGHTER_TYPE)({
    inspector,
    highlighterTestFront,
  });

  helper.prefix = ID;

  await helper.show("html");
  await respondsToMoveEvents(helper);
  await respondsToReturnAndEscape(helper);

  helper.finalize();
});

async function respondsToMoveEvents(helper) {
  info(
    "Checking that the eyedropper responds to events from the mouse and keyboard"
  );
  const { mouse } = helper;
  const { width, height } = await SpecialPowers.spawn(
    gBrowser.selectedBrowser,
    [],
    () => {
      const rect = content.document
        .querySelector("html")
        .getBoundingClientRect();
      return { width: rect.width, height: rect.height };
    }
  );

  for (let { type, x, y, key, shift, expected, desc } of MOVE_EVENTS_DATA) {
    x = typeof x === "function" ? x(width, height) : x;
    y = typeof y === "function" ? y(width, height) : y;
    expected.x =
      typeof expected.x === "function" ? expected.x(width, height) : expected.x;
    expected.y =
      typeof expected.y === "function" ? expected.y(width, height) : expected.y;

    if (typeof desc === "undefined") {
      info(`Simulating a ${type} event to move to ${expected.x} ${expected.y}`);
    } else {
      info(`Simulating ${type} event: ${desc}`);
    }

    if (type === "mouse") {
      await mouse.move(x, y);
    } else if (type === "keyboard") {
      const options = shift ? { shiftKey: true } : {};
      await EventUtils.synthesizeAndWaitKey(key, options);
    }
    await checkPosition(expected, helper);
  }
}

async function checkPosition({ x, y }, { getElementAttribute }) {
  const style = await getElementAttribute("root", "style");
  is(
    style,
    `top:${y}px;left:${x}px;`,
    `The eyedropper is at the expected ${x} ${y} position`
  );
}

async function respondsToReturnAndEscape({ isElementHidden, show }) {
  info("Simulating return to select the color and hide the eyedropper");

  await EventUtils.synthesizeAndWaitKey("VK_RETURN", {});
  let hidden = await isElementHidden("root");
  ok(hidden, "The eyedropper has been hidden");

  info("Showing the eyedropper again and simulating escape to hide it");

  await show("html");
  await EventUtils.synthesizeAndWaitKey("VK_ESCAPE", {});
  hidden = await isElementHidden("root");
  ok(hidden, "The eyedropper has been hidden again");
}
