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

/**
 * Bug 723069: test the debugger breakpoint API and connection to the source
 * editor.
 */

const TAB_URL = EXAMPLE_URL + "browser_dbg_script-switching.html";

let gPane = null;
let gTab = null;
let gDebuggee = null;
let gDebugger = null;
let gScripts = null;
let gEditor = null;
let gBreakpoints = null;

function test()
{
  let tempScope = {};
  Cu.import("resource:///modules/source-editor.jsm", tempScope);
  let SourceEditor = tempScope.SourceEditor;

  debug_tab_pane(TAB_URL, function(aTab, aDebuggee, aPane) {
    gTab = aTab;
    gDebuggee = aDebuggee;
    gPane = aPane;
    gDebugger = gPane.debuggerWindow;

    gPane.activeThread.addOneTimeListener("scriptsadded", function() {
      Services.tm.currentThread.dispatch({ run: onScriptsAdded }, 0);
    });
    gDebuggee.firstCall();
  });

  function onScriptsAdded()
  {
    gScripts = gDebugger.DebuggerView.Scripts;

    is(gDebugger.StackFrames.activeThread.state, "paused",
      "Should only be getting stack frames while paused.");

    is(gScripts._scripts.itemCount, 2, "Found the expected number of scripts.");

    gEditor = gDebugger.editor;

    isnot(gEditor.getText().indexOf("debugger"), -1,
          "The correct script was loaded initially.");
    isnot(gScripts.selected, gScripts.scriptLocations()[0],
          "the correct sccript is selected");

    gBreakpoints = gPane.breakpoints;
    is(Object.keys(gBreakpoints), 0, "no breakpoints");
    ok(!gPane.getBreakpoint("foo", 3), "getBreakpoint('foo', 3) returns falsey");

    is(gEditor.getBreakpoints().length, 0, "no breakpoints in the editor");


    info("add the first breakpoint");
    gEditor.addEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                             onEditorBreakpointAddFirst);
    let location = {url: gScripts.selected, line: 6};
    executeSoon(function() {
      gPane.addBreakpoint(location, onBreakpointAddFirst);
    });
  }

  let breakpointsAdded = 0;
  let breakpointsRemoved = 0;
  let editorBreakpointChanges = 0;

  function onEditorBreakpointAddFirst(aEvent)
  {
    gEditor.removeEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                                onEditorBreakpointAddFirst);
    editorBreakpointChanges++;

    ok(aEvent, "breakpoint1 added to the editor");
    is(aEvent.added.length, 1, "one breakpoint added to the editor");
    is(aEvent.removed.length, 0, "no breakpoint was removed from the editor");
    is(aEvent.added[0].line, 5, "editor breakpoint line is correct");

    is(gEditor.getBreakpoints().length, 1,
       "editor.getBreakpoints().length is correct");
  }

  function onBreakpointAddFirst(aBreakpointClient, aResponseError)
  {
    breakpointsAdded++;

    ok(aBreakpointClient, "breakpoint1 added, client received");
    ok(!aResponseError, "breakpoint1 added without errors");
    is(aBreakpointClient.location.url, gScripts.selected,
       "breakpoint1 client url is correct");
    is(aBreakpointClient.location.line, 6,
       "breakpoint1 client line is correct");

    executeSoon(function() {
      ok(aBreakpointClient.actor in gBreakpoints,
         "breakpoint1 client found in the list of debugger breakpoints");
      is(Object.keys(gBreakpoints).length, 1,
         "the list of debugger breakpoints holds only one breakpoint");
      is(gPane.getBreakpoint(gScripts.selected, 6), aBreakpointClient,
         "getBreakpoint(selectedScript, 2) returns the correct breakpoint");

      info("remove the first breakpoint");
      gEditor.addEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                               onEditorBreakpointRemoveFirst);
      gPane.removeBreakpoint(aBreakpointClient, onBreakpointRemoveFirst);
    });
  }

  function onBreakpointRemoveFirst(aLocation)
  {
    breakpointsRemoved++;

    ok(aLocation, "breakpoint1 removed");
    is(aLocation.url, gScripts.selected, "breakpoint1 remove: url is correct");
    is(aLocation.line, 6, "breakpoint1 remove: line is correct");

    executeSoon(testBreakpointAddBackground);
  }

  function onEditorBreakpointRemoveFirst(aEvent)
  {
    gEditor.removeEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                                onEditorBreakpointRemoveFirst);
    editorBreakpointChanges++;

    ok(aEvent, "breakpoint1 removed from the editor");
    is(aEvent.added.length, 0, "no breakpoint was added to the editor");
    is(aEvent.removed.length, 1, "one breakpoint was removed from the editor");
    is(aEvent.removed[0].line, 5, "editor breakpoint line is correct");

    is(gEditor.getBreakpoints().length, 0, "editor.getBreakpoints().length is correct");
  }

  function testBreakpointAddBackground()
  {
    info("add a breakpoint to the second script which is not selected");

    is(Object.keys(gBreakpoints).length, 0, "no breakpoints in the debugger");
    ok(!gPane.getBreakpoint(gScripts.selected, 6),
       "getBreakpoint(selectedScript, 6) returns no breakpoint");

    let script0 = gScripts.scriptLocations()[0];
    isnot(script0, gScripts.selected,
          "first script location is not the currently selected script");

    let location = {url: script0, line: 5};
    gEditor.addEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                             onEditorBreakpointAddBackgroundTrap);
    gPane.addBreakpoint(location, onBreakpointAddBackground);
  }

  function onEditorBreakpointAddBackgroundTrap(aEvent)
  {
    // trap listener: no breakpoint must be added to the editor when a breakpoint
    // is added to a script that is not currently selected.
    gEditor.removeEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                                onEditorBreakpointAddBackgroundTrap);
    editorBreakpointChanges++;
    ok(false, "breakpoint2 must not be added to the editor");
  }

  function onBreakpointAddBackground(aBreakpointClient, aResponseError)
  {
    breakpointsAdded++;

    ok(aBreakpointClient, "breakpoint2 added, client received");
    ok(!aResponseError, "breakpoint2 added without errors");
    is(aBreakpointClient.location.url, gScripts.scriptLocations()[0],
       "breakpoint2 client url is correct");
    is(aBreakpointClient.location.line, 5,
       "breakpoint2 client line is correct");

    executeSoon(function() {
      ok(aBreakpointClient.actor in gBreakpoints,
         "breakpoint2 client found in the list of debugger breakpoints");
      is(Object.keys(gBreakpoints).length, 1, "one breakpoint in the debugger");
      is(gPane.getBreakpoint(gScripts.scriptLocations()[0], 5), aBreakpointClient,
         "getBreakpoint(scriptLocations[0], 5) returns the correct breakpoint");

      // remove the trap listener
      gEditor.removeEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                                  onEditorBreakpointAddBackgroundTrap);

      gEditor.addEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                               onEditorBreakpointAddSwitch);
      gEditor.addEventListener(SourceEditor.EVENTS.TEXT_CHANGED,
                               onEditorTextChanged);

      info("switch to the second script");

      gScripts._scripts.selectedIndex = 0;
      gDebugger.SourceScripts.onChange({ target: gScripts._scripts });
    });
  }

  function onEditorBreakpointAddSwitch(aEvent)
  {
    gEditor.removeEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                                onEditorBreakpointAddSwitch);
    editorBreakpointChanges++;

    ok(aEvent, "breakpoint2 added to the editor");
    is(aEvent.added.length, 1, "one breakpoint added to the editor");
    is(aEvent.removed.length, 0, "no breakpoint was removed from the editor");
    is(aEvent.added[0].line, 4, "editor breakpoint line is correct");

    is(gEditor.getBreakpoints().length, 1,
       "editor.getBreakpoints().length is correct");
  }

  function onEditorTextChanged()
  {
    gEditor.removeEventListener(SourceEditor.EVENTS.TEXT_CHANGED,
                                onEditorTextChanged);

    is(gEditor.getText().indexOf("debugger"), -1,
       "The second script is no longer displayed.");

    isnot(gEditor.getText().indexOf("firstCall"), -1,
          "The first script is displayed.");

    executeSoon(function() {
      info("remove the second breakpoint using the mouse");

      gEditor.addEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                               onEditorBreakpointRemoveSecond);

      let testWin = gEditor.editorElement.ownerDocument.defaultView;
      EventUtils.synthesizeMouse(gEditor.editorElement, 10, 70, {}, testWin);
    });

  }

  function onEditorBreakpointRemoveSecond(aEvent)
  {
    gEditor.removeEventListener(SourceEditor.EVENTS.BREAKPOINT_CHANGE,
                                onEditorBreakpointRemoveSecond);
    editorBreakpointChanges++;

    ok(aEvent, "breakpoint2 removed from the editor");
    is(aEvent.added.length, 0, "no breakpoint was added to the editor");
    is(aEvent.removed.length, 1, "one breakpoint was removed from the editor");
    is(aEvent.removed[0].line, 4, "editor breakpoint line is correct");

    is(gEditor.getBreakpoints().length, 0, "editor.getBreakpoints().length is correct");

    executeSoon(function() {
      gDebugger.StackFrames.activeThread.resume(finish);
    });
  }

  registerCleanupFunction(function() {
    is(Object.keys(gBreakpoints).length, 0, "no breakpoint in the debugger");
    ok(!gPane.getBreakpoint(gScripts.scriptLocations()[0], 5),
       "getBreakpoint(scriptLocations[0], 5) returns no breakpoint");

    removeTab(gTab);
    is(breakpointsAdded, 2, "correct number of breakpoints have been added");
    is(breakpointsRemoved, 1, "correct number of breakpoints have been removed");
    is(editorBreakpointChanges, 4, "correct number of editor breakpoint changes");
    gPane = null;
    gTab = null;
    gDebuggee = null;
    gDebugger = null;
    gScripts = null;
    gEditor = null;
    gBreakpoints = null;
  });
}