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

"use strict";

// Tests if movement via event dispatching using screenX / screenY
// works.  All of the other tests directly use the graph's mouse event
// callbacks with textX / testY for convenience.

const TEST_DATA = [
  { delta: 112, value: 48 },
  { delta: 213, value: 59 },
  { delta: 313, value: 60 },
  { delta: 413, value: 59 },
  { delta: 530, value: 59 },
  { delta: 646, value: 58 },
  { delta: 747, value: 60 },
  { delta: 863, value: 48 },
  { delta: 980, value: 37 },
  { delta: 1097, value: 30 },
  { delta: 1213, value: 29 },
  { delta: 1330, value: 23 },
  { delta: 1430, value: 10 },
  { delta: 1534, value: 17 },
  { delta: 1645, value: 20 },
  { delta: 1746, value: 22 },
  { delta: 1846, value: 39 },
  { delta: 1963, value: 26 },
  { delta: 2080, value: 27 },
  { delta: 2197, value: 35 },
  { delta: 2312, value: 47 },
  { delta: 2412, value: 53 },
  { delta: 2514, value: 60 },
  { delta: 2630, value: 37 },
  { delta: 2730, value: 36 },
  { delta: 2830, value: 37 },
  { delta: 2946, value: 36 },
  { delta: 3046, value: 40 },
  { delta: 3163, value: 47 },
  { delta: 3280, value: 41 },
  { delta: 3380, value: 35 },
  { delta: 3480, value: 27 },
  { delta: 3580, value: 39 },
  { delta: 3680, value: 42 },
  { delta: 3780, value: 49 },
  { delta: 3880, value: 55 },
  { delta: 3980, value: 60 },
  { delta: 4080, value: 60 },
  { delta: 4180, value: 60 },
];
const LineGraphWidget = require("devtools/client/shared/widgets/LineGraphWidget");

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

async function performTest() {
  const { host, doc } = await createHost();
  const graph = new LineGraphWidget(doc.body, "fps");
  await graph.once("ready");
  testGraph(graph);
  await graph.destroy();
  host.destroy();
}

function testGraph(graph) {
  graph.setData(TEST_DATA);

  info("Making a selection.");

  dragStart(graph, 300);
  ok(graph.hasSelectionInProgress(), "The selection should start (1).");
  is(
    graph.getSelection().start,
    300,
    "The current selection start value is correct (1)."
  );
  is(
    graph.getSelection().end,
    300,
    "The current selection end value is correct (1)."
  );

  hover(graph, 400);
  ok(
    graph.hasSelectionInProgress(),
    "The selection should still be in progress (2)."
  );
  is(
    graph.getSelection().start,
    300,
    "The current selection start value is correct (2)."
  );
  is(
    graph.getSelection().end,
    400,
    "The current selection end value is correct (2)."
  );

  dragStop(graph, 500);
  ok(!graph.hasSelectionInProgress(), "The selection should have stopped (3).");
  is(
    graph.getSelection().start,
    300,
    "The current selection start value is correct (3)."
  );
  is(
    graph.getSelection().end,
    500,
    "The current selection end value is correct (3)."
  );

  info("Making a new selection.");

  dragStart(graph, 200);
  ok(graph.hasSelectionInProgress(), "The selection should start (4).");
  is(
    graph.getSelection().start,
    200,
    "The current selection start value is correct (4)."
  );
  is(
    graph.getSelection().end,
    200,
    "The current selection end value is correct (4)."
  );

  hover(graph, 300);
  ok(
    graph.hasSelectionInProgress(),
    "The selection should still be in progress (5)."
  );
  is(
    graph.getSelection().start,
    200,
    "The current selection start value is correct (5)."
  );
  is(
    graph.getSelection().end,
    300,
    "The current selection end value is correct (5)."
  );

  dragStop(graph, 400);
  ok(!graph.hasSelectionInProgress(), "The selection should have stopped (6).");
  is(
    graph.getSelection().start,
    200,
    "The current selection start value is correct (6)."
  );
  is(
    graph.getSelection().end,
    400,
    "The current selection end value is correct (6)."
  );
}

// EventUtils just doesn't work!

function dispatchEvent(graph, x, y, type) {
  x /= window.devicePixelRatio;
  y /= window.devicePixelRatio;
  const quad = graph._canvas.getBoxQuads({
    relativeTo: window.document,
  })[0];

  const screenX = window.screenX + quad.p1.x + x;
  const screenY = window.screenY + quad.p1.y + y;

  graph._canvas.dispatchEvent(
    new MouseEvent(type, {
      bubbles: true,
      cancelable: true,
      buttons: 1,
      view: window,
      screenX: screenX,
      screenY: screenY,
    })
  );
}

function hover(graph, x, y = 1) {
  dispatchEvent(graph, x, y, "mousemove");
}

function dragStart(graph, x, y = 1) {
  dispatchEvent(graph, x, y, "mousemove");
  dispatchEvent(graph, x, y, "mousedown");
}

function dragStop(graph, x, y = 1) {
  dispatchEvent(graph, x, y, "mousemove");
  dispatchEvent(graph, x, y, "mouseup");
}