/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
/* Any copyright is dedicated to the Public Domain.
 http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Test that pseudoelements are displayed correctly in the rule view

const TEST_URI = URL_ROOT + "doc_pseudoelement.html";
const PSEUDO_PREF = "devtools.inspector.show_pseudo_elements";

add_task(async function() {
  await pushPref(PSEUDO_PREF, true);

  await addTab(TEST_URI);
  const {inspector, view} = await openRuleView();

  await testTopLeft(inspector, view);
  await testTopRight(inspector, view);
  await testBottomRight(inspector, view);
  await testBottomLeft(inspector, view);
  await testParagraph(inspector, view);
  await testBody(inspector, view);
});

async function testTopLeft(inspector, view) {
  const id = "#topleft";
  const rules = await assertPseudoElementRulesNumbers(id,
    inspector, view, {
      elementRulesNb: 4,
      firstLineRulesNb: 2,
      firstLetterRulesNb: 1,
      selectionRulesNb: 1,
      afterRulesNb: 1,
      beforeRulesNb: 2
    }
  );

  const gutters = assertGutters(view);

  info("Make sure that clicking on the twisty hides pseudo elements");
  const expander = gutters[0].querySelector(".ruleview-expander");
  ok(!view.element.children[1].hidden, "Pseudo Elements are expanded");

  expander.click();
  ok(view.element.children[1].hidden,
    "Pseudo Elements are collapsed by twisty");

  expander.click();
  ok(!view.element.children[1].hidden, "Pseudo Elements are expanded again");

  info("Make sure that dblclicking on the header container also toggles " +
       "the pseudo elements");
  EventUtils.synthesizeMouseAtCenter(gutters[0], {clickCount: 2},
                                     view.styleWindow);
  ok(view.element.children[1].hidden,
    "Pseudo Elements are collapsed by dblclicking");

  const elementRuleView = getRuleViewRuleEditor(view, 3);

  const elementFirstLineRule = rules.firstLineRules[0];
  const elementFirstLineRuleView =
    [...view.element.children[1].children].filter(e => {
      return e._ruleEditor && e._ruleEditor.rule === elementFirstLineRule;
    })[0]._ruleEditor;

  is(convertTextPropsToString(elementFirstLineRule.textProps),
     "color: orange",
     "TopLeft firstLine properties are correct");

  let onAdded = view.once("ruleview-changed");
  let firstProp = elementFirstLineRuleView.addProperty("background-color",
    "rgb(0, 255, 0)", "", true);
  await onAdded;

  onAdded = view.once("ruleview-changed");
  const secondProp = elementFirstLineRuleView.addProperty("font-style",
    "italic", "", true);
  await onAdded;

  is(firstProp,
     elementFirstLineRule.textProps[elementFirstLineRule.textProps.length - 2],
     "First added property is on back of array");
  is(secondProp,
     elementFirstLineRule.textProps[elementFirstLineRule.textProps.length - 1],
     "Second added property is on back of array");

  is((await getComputedStyleProperty(id, ":first-line", "background-color")),
     "rgb(0, 255, 0)", "Added property should have been used.");
  is((await getComputedStyleProperty(id, ":first-line", "font-style")),
     "italic", "Added property should have been used.");
  is((await getComputedStyleProperty(id, null, "text-decoration")),
     "none", "Added property should not apply to element");

  await togglePropStatus(view, firstProp);

  is((await getComputedStyleProperty(id, ":first-line", "background-color")),
     "rgb(255, 0, 0)", "Disabled property should now have been used.");
  is((await getComputedStyleProperty(id, null, "background-color")),
     "rgb(221, 221, 221)", "Added property should not apply to element");

  await togglePropStatus(view, firstProp);

  is((await getComputedStyleProperty(id, ":first-line", "background-color")),
     "rgb(0, 255, 0)", "Added property should have been used.");
  is((await getComputedStyleProperty(id, null, "text-decoration")),
     "none", "Added property should not apply to element");

  onAdded = view.once("ruleview-changed");
  firstProp = elementRuleView.addProperty("background-color",
                                          "rgb(0, 0, 255)", "", true);
  await onAdded;

  is((await getComputedStyleProperty(id, null, "background-color")),
     "rgb(0, 0, 255)", "Added property should have been used.");
  is((await getComputedStyleProperty(id, ":first-line", "background-color")),
     "rgb(0, 255, 0)", "Added prop does not apply to pseudo");
}

async function testTopRight(inspector, view) {
  await assertPseudoElementRulesNumbers("#topright", inspector, view, {
    elementRulesNb: 4,
    firstLineRulesNb: 1,
    firstLetterRulesNb: 1,
    selectionRulesNb: 0,
    beforeRulesNb: 2,
    afterRulesNb: 1
  });

  const gutters = assertGutters(view);

  const expander = gutters[0].querySelector(".ruleview-expander");
  ok(!view.element.firstChild.classList.contains("show-expandable-container"),
     "Pseudo Elements remain collapsed after switching element");

  expander.scrollIntoView();
  expander.click();
  ok(!view.element.children[1].hidden,
    "Pseudo Elements are shown again after clicking twisty");
}

async function testBottomRight(inspector, view) {
  await assertPseudoElementRulesNumbers("#bottomright", inspector, view, {
    elementRulesNb: 4,
    firstLineRulesNb: 1,
    firstLetterRulesNb: 1,
    selectionRulesNb: 0,
    beforeRulesNb: 3,
    afterRulesNb: 1
  });
}

async function testBottomLeft(inspector, view) {
  await assertPseudoElementRulesNumbers("#bottomleft", inspector, view, {
    elementRulesNb: 4,
    firstLineRulesNb: 1,
    firstLetterRulesNb: 1,
    selectionRulesNb: 0,
    beforeRulesNb: 2,
    afterRulesNb: 1
  });
}

async function testParagraph(inspector, view) {
  const rules =
    await assertPseudoElementRulesNumbers("#bottomleft p", inspector, view, {
      elementRulesNb: 3,
      firstLineRulesNb: 1,
      firstLetterRulesNb: 1,
      selectionRulesNb: 2,
      beforeRulesNb: 0,
      afterRulesNb: 0
    });

  assertGutters(view);

  const elementFirstLineRule = rules.firstLineRules[0];
  is(convertTextPropsToString(elementFirstLineRule.textProps),
     "background: blue",
     "Paragraph first-line properties are correct");

  const elementFirstLetterRule = rules.firstLetterRules[0];
  is(convertTextPropsToString(elementFirstLetterRule.textProps),
     "color: red; font-size: 130%",
     "Paragraph first-letter properties are correct");

  const elementSelectionRule = rules.selectionRules[0];
  is(convertTextPropsToString(elementSelectionRule.textProps),
     "color: white; background: black",
     "Paragraph first-letter properties are correct");
}

async function testBody(inspector, view) {
  await testNode("body", inspector, view);

  const gutters = getGutters(view);
  is(gutters.length, 0, "There are no gutter headings");
}

function convertTextPropsToString(textProps) {
  return textProps.map(t => t.name + ": " + t.value).join("; ");
}

async function testNode(selector, inspector, view) {
  await selectNode(selector, inspector);
  const elementStyle = view._elementStyle;
  return elementStyle;
}

async function assertPseudoElementRulesNumbers(selector, inspector, view, ruleNbs) {
  const elementStyle = await testNode(selector, inspector, view);

  const rules = {
    elementRules: elementStyle.rules.filter(rule => !rule.pseudoElement),
    firstLineRules: elementStyle.rules.filter(rule =>
      rule.pseudoElement === ":first-line"),
    firstLetterRules: elementStyle.rules.filter(rule =>
      rule.pseudoElement === ":first-letter"),
    selectionRules: elementStyle.rules.filter(rule =>
      rule.pseudoElement === ":selection"),
    beforeRules: elementStyle.rules.filter(rule =>
      rule.pseudoElement === ":before"),
    afterRules: elementStyle.rules.filter(rule =>
      rule.pseudoElement === ":after"),
  };

  is(rules.elementRules.length, ruleNbs.elementRulesNb,
     selector + " has the correct number of non pseudo element rules");
  is(rules.firstLineRules.length, ruleNbs.firstLineRulesNb,
     selector + " has the correct number of :first-line rules");
  is(rules.firstLetterRules.length, ruleNbs.firstLetterRulesNb,
     selector + " has the correct number of :first-letter rules");
  is(rules.selectionRules.length, ruleNbs.selectionRulesNb,
     selector + " has the correct number of :selection rules");
  is(rules.beforeRules.length, ruleNbs.beforeRulesNb,
     selector + " has the correct number of :before rules");
  is(rules.afterRules.length, ruleNbs.afterRulesNb,
     selector + " has the correct number of :after rules");

  return rules;
}

function getGutters(view) {
  return view.element.querySelectorAll(".ruleview-header");
}

function assertGutters(view) {
  const gutters = getGutters(view);

  is(gutters.length, 3,
     "There are 3 gutter headings");
  is(gutters[0].textContent, "Pseudo-elements",
     "Gutter heading is correct");
  is(gutters[1].textContent, "This Element",
     "Gutter heading is correct");
  is(gutters[2].textContent, "Inherited from body",
     "Gutter heading is correct");

  return gutters;
}
