/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Tests that selections in the flame graph widget work properly.

const TEST_DATA = [
  {
    color: "#f00",
    blocks: [
      { x: 0, y: 0, width: 50, height: 20, text: "FOO" },
      { x: 50, y: 0, width: 100, height: 20, text: "BAR" }
    ]
  },
  {
    color: "#00f",
    blocks: [
      { x: 0, y: 30, width: 30, height: 20, text: "BAZ" }
    ]
  }
];
const TEST_BOUNDS = { startTime: 0, endTime: 150 };
const TEST_WIDTH = 200;
const TEST_HEIGHT = 100;

const {FlameGraph} = require("devtools/client/shared/widgets/FlameGraph");

add_task(async function() {
  await addTab("about:blank");
  await performTest();
  gBrowser.removeCurrentTab();
});

async function performTest() {
  const [host,, doc] = await createHost();
  doc.body.setAttribute("style",
                        "position: fixed; width: 100%; height: 100%; margin: 0;");

  const graph = new FlameGraph(doc.body, 1);
  graph.fixedWidth = TEST_WIDTH;
  graph.fixedHeight = TEST_HEIGHT;
  graph.horizontalPanThreshold = 0;
  graph.verticalPanThreshold = 0;

  await graph.ready();

  testGraph(graph);

  await graph.destroy();
  host.destroy();
}

function testGraph(graph) {
  graph.setData({ data: TEST_DATA, bounds: TEST_BOUNDS });

  is(graph.getViewRange().startTime, 0,
    "The selection start boundary is correct (1).");
  is(graph.getViewRange().endTime, 150,
    "The selection end boundary is correct (1).");

  scroll(graph, 200, HORIZONTAL_AXIS, 10);
  is(graph.getViewRange().startTime | 0, 75,
    "The selection start boundary is correct (2).");
  is(graph.getViewRange().endTime | 0, 150,
    "The selection end boundary is correct (2).");

  scroll(graph, -200, HORIZONTAL_AXIS, 10);
  is(graph.getViewRange().startTime | 0, 37,
    "The selection start boundary is correct (3).");
  is(graph.getViewRange().endTime | 0, 112,
    "The selection end boundary is correct (3).");

  scroll(graph, 200, VERTICAL_AXIS, TEST_WIDTH / 2);
  is(graph.getViewRange().startTime | 0, 34,
    "The selection start boundary is correct (4).");
  is(graph.getViewRange().endTime | 0, 115,
    "The selection end boundary is correct (4).");

  scroll(graph, -200, VERTICAL_AXIS, TEST_WIDTH / 2);
  is(graph.getViewRange().startTime | 0, 37,
    "The selection start boundary is correct (5).");
  is(graph.getViewRange().endTime | 0, 112,
    "The selection end boundary is correct (5).");

  dragStart(graph, TEST_WIDTH / 2);
  is(graph.getViewRange().startTime | 0, 37,
    "The selection start boundary is correct (6).");
  is(graph.getViewRange().endTime | 0, 112,
    "The selection end boundary is correct (6).");

  hover(graph, TEST_WIDTH / 2 - 10);
  is(graph.getViewRange().startTime | 0, 41,
    "The selection start boundary is correct (7).");
  is(graph.getViewRange().endTime | 0, 116,
    "The selection end boundary is correct (7).");

  dragStop(graph, 10);
  is(graph.getViewRange().startTime | 0, 71,
    "The selection start boundary is correct (8).");
  is(graph.getViewRange().endTime | 0, 145,
    "The selection end boundary is correct (8).");
}

// EventUtils just doesn't work!

function hover(graph, x, y = 1) {
  x /= window.devicePixelRatio;
  y /= window.devicePixelRatio;
  graph._onMouseMove({ testX: x, testY: y });
}

function dragStart(graph, x, y = 1) {
  x /= window.devicePixelRatio;
  y /= window.devicePixelRatio;
  graph._onMouseMove({ testX: x, testY: y });
  graph._onMouseDown({ testX: x, testY: y });
}

function dragStop(graph, x, y = 1) {
  x /= window.devicePixelRatio;
  y /= window.devicePixelRatio;
  graph._onMouseMove({ testX: x, testY: y });
  graph._onMouseUp({ testX: x, testY: y });
}

var HORIZONTAL_AXIS = 1;
var VERTICAL_AXIS = 2;

function scroll(graph, wheel, axis, x, y = 1) {
  x /= window.devicePixelRatio;
  y /= window.devicePixelRatio;
  graph._onMouseMove({ testX: x, testY: y });
  graph._onMouseWheel({ testX: x, testY: y, axis, detail: wheel,
                        HORIZONTAL_AXIS,
                        VERTICAL_AXIS
  });
}
