michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:    http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: /**
michael@0:  * Make sure that the variables view is keyboard accessible.
michael@0:  */
michael@0: 
michael@0: let gTab, gDebuggee, gPanel, gDebugger;
michael@0: let gVariablesView;
michael@0: 
michael@0: function test() {
michael@0:   initDebugger("about:blank").then(([aTab, aDebuggee, aPanel]) => {
michael@0:     gTab = aTab;
michael@0:     gDebuggee = aDebuggee;
michael@0:     gPanel = aPanel;
michael@0:     gDebugger = gPanel.panelWin;
michael@0:     gVariablesView = gDebugger.DebuggerView.Variables;
michael@0: 
michael@0:     performTest().then(null, aError => {
michael@0:       ok(false, "Got an error: " + aError.message + "\n" + aError.stack);
michael@0:     });
michael@0:   });
michael@0: }
michael@0: 
michael@0: function performTest() {
michael@0:   let arr = [
michael@0:     42,
michael@0:     true,
michael@0:     "nasu",
michael@0:     undefined,
michael@0:     null,
michael@0:     [0, 1, 2],
michael@0:     { prop1: 9, prop2: 8 }
michael@0:   ];
michael@0: 
michael@0:   let obj = {
michael@0:     p0: 42,
michael@0:     p1: true,
michael@0:     p2: "nasu",
michael@0:     p3: undefined,
michael@0:     p4: null,
michael@0:     p5: [3, 4, 5],
michael@0:     p6: { prop1: 7, prop2: 6 },
michael@0:     get p7() { return arr; },
michael@0:     set p8(value) { arr[0] = value }
michael@0:   };
michael@0: 
michael@0:   let test = {
michael@0:     someProp0: 42,
michael@0:     someProp1: true,
michael@0:     someProp2: "nasu",
michael@0:     someProp3: undefined,
michael@0:     someProp4: null,
michael@0:     someProp5: arr,
michael@0:     someProp6: obj,
michael@0:     get someProp7() { return arr; },
michael@0:     set someProp7(value) { arr[0] = value }
michael@0:   };
michael@0: 
michael@0:   gVariablesView.eval = function() {};
michael@0:   gVariablesView.switch = function() {};
michael@0:   gVariablesView.delete = function() {};
michael@0:   gVariablesView.rawObject = test;
michael@0:   gVariablesView.scrollPageSize = 5;
michael@0: 
michael@0:   return Task.spawn(function() {
michael@0:     yield waitForTick();
michael@0: 
michael@0:     // Part 0: Test generic focus methods on the variables view.
michael@0: 
michael@0:     gVariablesView.focusFirstVisibleItem();
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     gVariablesView.focusNextItem();
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp1",
michael@0:       "The 'someProp1' item should be focused.");
michael@0: 
michael@0:     gVariablesView.focusPrevItem();
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     // Part 1: Make sure that UP/DOWN keys don't scroll the variables view.
michael@0: 
michael@0:     yield synthesizeKeyAndWaitForTick("VK_DOWN", {});
michael@0:     is(gVariablesView._parent.scrollTop, 0,
michael@0:       "The 'variables' view shouldn't scroll when pressing the DOWN key.");
michael@0: 
michael@0:     yield synthesizeKeyAndWaitForTick("VK_UP", {});
michael@0:     is(gVariablesView._parent.scrollTop, 0,
michael@0:       "The 'variables' view shouldn't scroll when pressing the UP key.");
michael@0: 
michael@0:     // Part 2: Make sure that RETURN/ESCAPE toggle input elements.
michael@0: 
michael@0:     yield synthesizeKeyAndWaitForElement("VK_RETURN", {}, ".element-value-input", true);
michael@0:     yield synthesizeKeyAndWaitForElement("VK_ESCAPE", {}, ".element-value-input", false);
michael@0:     yield synthesizeKeyAndWaitForElement("VK_RETURN", { shiftKey: true }, ".element-name-input", true);
michael@0:     yield synthesizeKeyAndWaitForElement("VK_ESCAPE", {}, ".element-name-input", false);
michael@0: 
michael@0:     // Part 3: Test simple navigation.
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp1",
michael@0:       "The 'someProp1' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("END", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("HOME", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     // Part 4: Test if pressing the same navigation key twice works as expected.
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp1",
michael@0:       "The 'someProp1' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp2",
michael@0:       "The 'someProp2' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp1",
michael@0:       "The 'someProp1' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     // Part 5: Test that HOME/PAGE_UP/PAGE_DOWN are symmetrical.
michael@0: 
michael@0:     EventUtils.sendKey("HOME", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("HOME", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("HOME", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("END", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("END", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("END", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     // Part 6: Test that focus doesn't leave the variables view.
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     // Part 7: Test that random offsets don't occur in tandem with HOME/END.
michael@0: 
michael@0:     EventUtils.sendKey("HOME", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp1",
michael@0:       "The 'someProp1' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("END", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     // Part 8: Test that the RIGHT key expands elements as intended.
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().expanded, false,
michael@0:       "The 'someProp5' item should not be expanded yet.");
michael@0: 
michael@0:     yield synthesizeKeyAndWaitForTick("VK_RIGHT", {});
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().expanded, true,
michael@0:       "The 'someProp5' item should now be expanded.");
michael@0:     is(gVariablesView.getFocusedItem()._store.size, 9,
michael@0:       "There should be 9 properties in the selected variable.");
michael@0:     is(gVariablesView.getFocusedItem()._enumItems.length, 7,
michael@0:       "There should be 7 enumerable properties in the selected variable.");
michael@0:     is(gVariablesView.getFocusedItem()._nonEnumItems.length, 2,
michael@0:       "There should be 2 non-enumerable properties in the selected variable.");
michael@0: 
michael@0:     yield waitForChildNodes(gVariablesView.getFocusedItem()._enum, 7);
michael@0:     yield waitForChildNodes(gVariablesView.getFocusedItem()._nonenum, 2);
michael@0: 
michael@0:     EventUtils.sendKey("RIGHT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "0",
michael@0:       "The '0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("RIGHT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "0",
michael@0:       "The '0' item should still be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "5",
michael@0:       "The '5' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().expanded, false,
michael@0:       "The '5' item should not be expanded yet.");
michael@0: 
michael@0:     yield synthesizeKeyAndWaitForTick("VK_RIGHT", {});
michael@0:     is(gVariablesView.getFocusedItem().name, "5",
michael@0:       "The '5' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().expanded, true,
michael@0:       "The '5' item should now be expanded.");
michael@0:     is(gVariablesView.getFocusedItem()._store.size, 5,
michael@0:       "There should be 5 properties in the selected variable.");
michael@0:     is(gVariablesView.getFocusedItem()._enumItems.length, 3,
michael@0:       "There should be 3 enumerable properties in the selected variable.");
michael@0:     is(gVariablesView.getFocusedItem()._nonEnumItems.length, 2,
michael@0:       "There should be 2 non-enumerable properties in the selected variable.");
michael@0: 
michael@0:     yield waitForChildNodes(gVariablesView.getFocusedItem()._enum, 3);
michael@0:     yield waitForChildNodes(gVariablesView.getFocusedItem()._nonenum, 2);
michael@0: 
michael@0:     EventUtils.sendKey("RIGHT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "0",
michael@0:       "The '0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("RIGHT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "0",
michael@0:       "The '0' item should still be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "6",
michael@0:       "The '6' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().expanded, false,
michael@0:       "The '6' item should not be expanded yet.");
michael@0: 
michael@0:     yield synthesizeKeyAndWaitForTick("VK_RIGHT", {});
michael@0:     is(gVariablesView.getFocusedItem().name, "6",
michael@0:       "The '6' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().expanded, true,
michael@0:       "The '6' item should now be expanded.");
michael@0:     is(gVariablesView.getFocusedItem()._store.size, 3,
michael@0:       "There should be 3 properties in the selected variable.");
michael@0:     is(gVariablesView.getFocusedItem()._enumItems.length, 2,
michael@0:       "There should be 2 enumerable properties in the selected variable.");
michael@0:     is(gVariablesView.getFocusedItem()._nonEnumItems.length, 1,
michael@0:       "There should be 1 non-enumerable properties in the selected variable.");
michael@0: 
michael@0:     yield waitForChildNodes(gVariablesView.getFocusedItem()._enum, 2);
michael@0:     yield waitForChildNodes(gVariablesView.getFocusedItem()._nonenum, 1);
michael@0: 
michael@0:     EventUtils.sendKey("RIGHT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "prop1",
michael@0:       "The 'prop1' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("RIGHT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "prop1",
michael@0:       "The 'prop1' item should still be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp6",
michael@0:       "The 'someProp6' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().expanded, false,
michael@0:       "The 'someProp6' item should not be expanded yet.");
michael@0: 
michael@0:     // Part 9: Test that the RIGHT key collapses elements as intended.
michael@0: 
michael@0:     EventUtils.sendKey("LEFT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp6",
michael@0:       "The 'someProp6' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("LEFT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().expanded, true,
michael@0:       "The '6' item should still be expanded.");
michael@0: 
michael@0:     EventUtils.sendKey("LEFT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should still be focused.");
michael@0:     is(gVariablesView.getFocusedItem().expanded, false,
michael@0:       "The '6' item should still not be expanded anymore.");
michael@0: 
michael@0:     EventUtils.sendKey("LEFT", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should still be focused.");
michael@0: 
michael@0:     // Part 9: Test continuous navigation.
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp4",
michael@0:       "The 'someProp4' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp3",
michael@0:       "The 'someProp3' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp2",
michael@0:       "The 'someProp2' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp1",
michael@0:       "The 'someProp1' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp0",
michael@0:       "The 'someProp0' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("PAGE_DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp5",
michael@0:       "The 'someProp5' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp6",
michael@0:       "The 'someProp6' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp7",
michael@0:       "The 'someProp7' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "get",
michael@0:       "The 'get' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "set",
michael@0:       "The 'set' item should be focused.");
michael@0: 
michael@0:     EventUtils.sendKey("DOWN", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' item should be focused.");
michael@0: 
michael@0:     // Part 10: Test that BACKSPACE deletes items in the variables view.
michael@0: 
michael@0:     EventUtils.sendKey("BACK_SPACE", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "__proto__",
michael@0:       "The '__proto__' variable should still be focused.");
michael@0:     is(gVariablesView.getFocusedItem().value, "[object Object]",
michael@0:       "The '__proto__' variable should not have an empty value.");
michael@0:     is(gVariablesView.getFocusedItem().visible, false,
michael@0:       "The '__proto__' variable should be hidden.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "set",
michael@0:       "The 'set' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().value, "[object Object]",
michael@0:       "The 'set' item should not have an empty value.");
michael@0:     is(gVariablesView.getFocusedItem().visible, true,
michael@0:       "The 'set' item should be visible.");
michael@0: 
michael@0:     EventUtils.sendKey("BACK_SPACE", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "set",
michael@0:       "The 'set' item should still be focused.");
michael@0:     is(gVariablesView.getFocusedItem().value, "[object Object]",
michael@0:       "The 'set' item should not have an empty value.");
michael@0:     is(gVariablesView.getFocusedItem().visible, true,
michael@0:       "The 'set' item should be visible.");
michael@0:     is(gVariablesView.getFocusedItem().twisty, false,
michael@0:       "The 'set' item should be disabled and have a hidden twisty.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "get",
michael@0:       "The 'get' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().value, "[object Object]",
michael@0:       "The 'get' item should not have an empty value.");
michael@0:     is(gVariablesView.getFocusedItem().visible, true,
michael@0:       "The 'get' item should be visible.");
michael@0: 
michael@0:     EventUtils.sendKey("BACK_SPACE", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "get",
michael@0:       "The 'get' item should still be focused.");
michael@0:     is(gVariablesView.getFocusedItem().value, "[object Object]",
michael@0:       "The 'get' item should not have an empty value.");
michael@0:     is(gVariablesView.getFocusedItem().visible, true,
michael@0:       "The 'get' item should be visible.");
michael@0:     is(gVariablesView.getFocusedItem().twisty, false,
michael@0:       "The 'get' item should be disabled and have a hidden twisty.");
michael@0: 
michael@0:     EventUtils.sendKey("UP", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp7",
michael@0:       "The 'someProp7' item should be focused.");
michael@0:     is(gVariablesView.getFocusedItem().value, undefined,
michael@0:       "The 'someProp7' variable should have an empty value.");
michael@0:     is(gVariablesView.getFocusedItem().visible, true,
michael@0:       "The 'someProp7' variable should be visible.");
michael@0: 
michael@0:     EventUtils.sendKey("BACK_SPACE", gDebugger);
michael@0:     is(gVariablesView.getFocusedItem().name, "someProp7",
michael@0:       "The 'someProp7' variable should still be focused.");
michael@0:     is(gVariablesView.getFocusedItem().value, undefined,
michael@0:       "The 'someProp7' variable should have an empty value.");
michael@0:     is(gVariablesView.getFocusedItem().visible, false,
michael@0:       "The 'someProp7' variable should be hidden.");
michael@0: 
michael@0:     // Part 11: Test that Ctrl-C copies the current item to the system clipboard
michael@0: 
michael@0:     gVariablesView.focusFirstVisibleItem();
michael@0:     let copied = promise.defer();
michael@0:     let expectedValue = gVariablesView.getFocusedItem().name
michael@0:       + gVariablesView.getFocusedItem().separatorStr
michael@0:       + gVariablesView.getFocusedItem().value;
michael@0: 
michael@0:     waitForClipboard(expectedValue, function setup() {
michael@0:         EventUtils.synthesizeKey("C", { metaKey: true }, gDebugger);
michael@0:       }, copied.resolve, copied.reject
michael@0:     );
michael@0: 
michael@0:     try {
michael@0:       yield copied.promise;
michael@0:       ok(true,
michael@0:         "Ctrl-C copied the selected item to the clipboard.");
michael@0:     } catch (e) {
michael@0:       ok(false,
michael@0:         "Ctrl-C didn't copy the selected item to the clipboard.");
michael@0:     }
michael@0: 
michael@0:     yield closeDebuggerAndFinish(gPanel);
michael@0:   });
michael@0: }
michael@0: 
michael@0: registerCleanupFunction(function() {
michael@0:   gTab = null;
michael@0:   gDebuggee = null;
michael@0:   gPanel = null;
michael@0:   gDebugger = null;
michael@0:   gVariablesView = null;
michael@0: });
michael@0: 
michael@0: function synthesizeKeyAndWaitForElement(aKey, aModifiers, aSelector, aExistence) {
michael@0:   EventUtils.synthesizeKey(aKey, aModifiers, gDebugger);
michael@0:   return waitForElement(aSelector, aExistence);
michael@0: }
michael@0: 
michael@0: function synthesizeKeyAndWaitForTick(aKey, aModifiers) {
michael@0:   EventUtils.synthesizeKey(aKey, aModifiers, gDebugger);
michael@0:   return waitForTick();
michael@0: }
michael@0: 
michael@0: function waitForElement(aSelector, aExistence) {
michael@0:   return waitForPredicate(() => {
michael@0:     return !!gVariablesView._list.querySelector(aSelector) == aExistence;
michael@0:   });
michael@0: }
michael@0: 
michael@0: function waitForChildNodes(aTarget, aCount) {
michael@0:   return waitForPredicate(() => {
michael@0:     return aTarget.childNodes.length == aCount;
michael@0:   });
michael@0: }
michael@0: 
michael@0: function waitForPredicate(aPredicate, aInterval = 10) {
michael@0:   let deferred = promise.defer();
michael@0: 
michael@0:   // Poll every few milliseconds until the element is retrieved.
michael@0:   let count = 0;
michael@0:   let intervalID = window.setInterval(() => {
michael@0:     // Make sure we don't wait for too long.
michael@0:     if (++count > 1000) {
michael@0:       deferred.reject("Timed out while polling for the element.");
michael@0:       window.clearInterval(intervalID);
michael@0:       return;
michael@0:     }
michael@0:     // Check if the predicate condition is fulfilled.
michael@0:     if (!aPredicate()) {
michael@0:       return;
michael@0:     }
michael@0:     // We got the element, it's safe to callback.
michael@0:     window.clearInterval(intervalID);
michael@0:     deferred.resolve();
michael@0:   }, aInterval);
michael@0: 
michael@0:   return deferred.promise;
michael@0: }