monaca-lib
Version:
Monaca cloud API bindings for JavaScript
152 lines (131 loc) • 6.13 kB
JavaScript
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @constructor
* @implements {WebInspector.TargetManager.Observer}
*/
WebInspector.ExecutionContextSelector = function()
{
WebInspector.targetManager.observeTargets(this);
WebInspector.context.addFlavorChangeListener(WebInspector.ExecutionContext, this._executionContextChanged, this);
WebInspector.context.addFlavorChangeListener(WebInspector.Target, this._targetChanged, this);
WebInspector.targetManager.addModelListener(WebInspector.RuntimeModel, WebInspector.RuntimeModel.Events.ExecutionContextCreated, this._onExecutionContextCreated, this);
WebInspector.targetManager.addModelListener(WebInspector.RuntimeModel, WebInspector.RuntimeModel.Events.ExecutionContextDestroyed, this._onExecutionContextDestroyed, this);
}
WebInspector.ExecutionContextSelector.prototype = {
/**
* @override
* @param {!WebInspector.Target} target
*/
targetAdded: function(target)
{
// Defer selecting default target since we need all clients to get their
// targetAdded notifications first.
setImmediate(function() {
if (!WebInspector.context.flavor(WebInspector.Target) || WebInspector.isWorkerFrontend())
WebInspector.context.setFlavor(WebInspector.Target, target);
});
},
/**
* @override
* @param {!WebInspector.Target} target
*/
targetRemoved: function(target)
{
var currentExecutionContext = WebInspector.context.flavor(WebInspector.ExecutionContext);
if (currentExecutionContext && currentExecutionContext.target() === target)
this._currentExecutionContextGone();
var targets = WebInspector.targetManager.targets();
if (WebInspector.context.flavor(WebInspector.Target) === target && targets.length && !WebInspector.isWorkerFrontend())
WebInspector.context.setFlavor(WebInspector.Target, targets[0]);
},
/**
* @param {!WebInspector.Event} event
*/
_executionContextChanged: function(event)
{
var newContext = /** @type {?WebInspector.ExecutionContext} */ (event.data);
if (newContext)
WebInspector.context.setFlavor(WebInspector.Target, newContext.target());
},
/**
* @param {!WebInspector.Event} event
*/
_targetChanged: function(event)
{
var newTarget = /** @type {?WebInspector.Target} */(event.data);
var currentContext = WebInspector.context.flavor(WebInspector.ExecutionContext);
if (!newTarget || (currentContext && currentContext.target() === newTarget))
return;
var executionContexts = newTarget.runtimeModel.executionContexts();
if (!executionContexts.length)
return;
var newContext = executionContexts[0];
for (var i = 1; i < executionContexts.length; ++i) {
if (executionContexts[i].isMainWorldContext)
newContext = executionContexts[i];
}
WebInspector.context.setFlavor(WebInspector.ExecutionContext, newContext);
},
/**
* @param {!WebInspector.Event} event
*/
_onExecutionContextCreated: function(event)
{
var executionContext = /** @type {!WebInspector.ExecutionContext} */ (event.data);
if (!WebInspector.context.flavor(WebInspector.ExecutionContext)) {
// FIXME(413886): Execution context for the main thread on the service/shared worker shadow page
// should never be sent to frontend. The worker frontend check below could be removed once this is fixed.
if (!WebInspector.isWorkerFrontend() || executionContext.target() !== WebInspector.targetManager.mainTarget())
WebInspector.context.setFlavor(WebInspector.ExecutionContext, executionContext);
}
},
/**
* @param {!WebInspector.Event} event
*/
_onExecutionContextDestroyed: function(event)
{
var executionContext = /** @type {!WebInspector.ExecutionContext}*/ (event.data);
if (WebInspector.context.flavor(WebInspector.ExecutionContext) === executionContext)
this._currentExecutionContextGone();
},
_currentExecutionContextGone: function()
{
var targets = WebInspector.targetManager.targets();
var newContext = null;
for (var i = 0; i < targets.length; ++i) {
if (WebInspector.isWorkerFrontend() && targets[i] === WebInspector.targetManager.mainTarget())
continue;
var executionContexts = targets[i].runtimeModel.executionContexts();
if (executionContexts.length) {
newContext = executionContexts[0];
break;
}
}
WebInspector.context.setFlavor(WebInspector.ExecutionContext, newContext);
}
}
/**
* @param {!Element} proxyElement
* @param {!Range} wordRange
* @param {boolean} force
* @param {function(!Array.<string>, number=)} completionsReadyCallback
*/
WebInspector.ExecutionContextSelector.completionsForTextPromptInCurrentContext = function(proxyElement, wordRange, force, completionsReadyCallback)
{
var executionContext = WebInspector.context.flavor(WebInspector.ExecutionContext);
if (!executionContext) {
completionsReadyCallback([]);
return;
}
// Pass less stop characters to rangeOfWord so the range will be a more complete expression.
var expressionRange = wordRange.startContainer.rangeOfWord(wordRange.startOffset, " =:({;,!+-*/&|^<>", proxyElement, "backward");
var expressionString = expressionRange.toString();
// The "[" is also a stop character, except when it's the last character of the expression.
var pos = expressionString.lastIndexOf("[", expressionString.length - 2);
if (pos !== -1)
expressionString = expressionString.substr(pos + 1);
var prefix = wordRange.toString();
executionContext.completionsForExpression(expressionString, prefix, force, completionsReadyCallback);
}