devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
197 lines (196 loc) • 9.72 kB
JavaScript
/**
* DevExtreme (integration/knockout/component_registrator.js)
* Version: 18.2.18
* Build date: Tue Oct 18 2022
*
* Copyright (c) 2012 - 2022 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
;
var $ = require("../../core/renderer"),
ko = require("knockout"),
Callbacks = require("../../core/utils/callbacks"),
errors = require("../../core/errors"),
inflector = require("../../core/utils/inflector"),
isPlainObject = require("../../core/utils/type").isPlainObject,
registerComponentCallbacks = require("../../core/component_registrator_callbacks"),
Widget = require("../../ui/widget/ui.widget"),
KoTemplate = require("./template"),
Editor = require("../../ui/editor/editor"),
Locker = require("../../core/utils/locker"),
getClosestNodeWithContext = require("./utils").getClosestNodeWithContext,
config = require("../../core/config");
var LOCKS_DATA_KEY = "dxKoLocks",
CREATED_WITH_KO_DATA_KEY = "dxKoCreation";
var editorsBindingHandlers = [];
var registerComponentKoBinding = function(componentName, componentClass) {
if (componentClass.subclassOf(Editor)) {
editorsBindingHandlers.push(componentName)
}
ko.bindingHandlers[componentName] = {
init: function(domNode, valueAccessor) {
var component, isBindingPropertyPredicate, $element = $(domNode),
optionChangedCallbacks = Callbacks(),
optionsByReference = {},
knockoutConfig = config().knockout,
isBindingPropertyPredicateName = knockoutConfig && knockoutConfig.isBindingPropertyPredicateName,
ctorOptions = {
onInitializing: function() {
optionsByReference = this._getOptionsByReference();
ko.computed(function() {
var model = ko.unwrap(valueAccessor());
if (component) {
component.beginUpdate()
}
isBindingPropertyPredicate = isBindingPropertyPredicateName && model && model[isBindingPropertyPredicateName];
unwrapModel(model);
if (component) {
component.endUpdate()
}
}, null, {
disposeWhenNodeIsRemoved: domNode
});
component = this
},
modelByElement: function($element) {
if ($element.length) {
var node = getClosestNodeWithContext($element.get(0));
return ko.dataFor(node)
}
},
nestedComponentOptions: function(component) {
return {
modelByElement: component.option("modelByElement"),
nestedComponentOptions: component.option("nestedComponentOptions")
}
},
_optionChangedCallbacks: optionChangedCallbacks,
integrationOptions: {
watchMethod: function(fn, callback, options) {
options = options || {};
var skipCallback = options.skipImmediate;
var watcher = ko.computed(function() {
var newValue = ko.unwrap(fn());
if (!skipCallback) {
callback(newValue)
}
skipCallback = false
});
return function() {
watcher.dispose()
}
},
templates: {
"dx-polymorph-widget": {
render: function(options) {
var widgetName = ko.utils.unwrapObservable(options.model.widget);
if (!widgetName) {
return
}
if ("button" === widgetName || "tabs" === widgetName || "dropDownMenu" === widgetName) {
var deprecatedName = widgetName;
widgetName = inflector.camelize("dx-" + widgetName);
errors.log("W0001", "dxToolbar - 'widget' item field", deprecatedName, "16.1", "Use: '" + widgetName + "' instead")
}
var markup = $("<div>").attr("data-bind", widgetName + ": options").get(0);
$(options.container).append(markup);
ko.applyBindings(options.model, markup)
}
}
},
createTemplate: function(element) {
return new KoTemplate(element)
}
}
},
optionNameToModelMap = {};
var applyModelValueToOption = function(optionName, modelValue, unwrap) {
var locks = $element.data(LOCKS_DATA_KEY),
optionValue = unwrap ? ko.unwrap(modelValue) : modelValue;
if (ko.isWriteableObservable(modelValue)) {
optionNameToModelMap[optionName] = modelValue
}
if (component) {
if (locks.locked(optionName)) {
return
}
locks.obtain(optionName);
try {
if (ko.ignoreDependencies) {
ko.ignoreDependencies(component.option, component, [optionName, optionValue])
} else {
component.option(optionName, optionValue)
}
} finally {
locks.release(optionName)
}
} else {
ctorOptions[optionName] = optionValue
}
};
var handleOptionChanged = function(args) {
var optionName = args.fullName,
optionValue = args.value;
if (!(optionName in optionNameToModelMap)) {
return
}
var $element = this._$element,
locks = $element.data(LOCKS_DATA_KEY);
if (locks.locked(optionName)) {
return
}
locks.obtain(optionName);
try {
optionNameToModelMap[optionName](optionValue)
} finally {
locks.release(optionName)
}
};
var createComponent = function() {
optionChangedCallbacks.add(handleOptionChanged);
$element.data(CREATED_WITH_KO_DATA_KEY, true).data(LOCKS_DATA_KEY, new Locker);
new componentClass($element, ctorOptions);
ctorOptions = null
};
var unwrapModelValue = function(currentModel, propertyName, propertyPath) {
if (propertyPath === isBindingPropertyPredicateName) {
return
}
if (!isBindingPropertyPredicate || isBindingPropertyPredicate(propertyPath, propertyName, currentModel)) {
var unwrappedPropertyValue;
ko.computed(function() {
var propertyValue = currentModel[propertyName];
applyModelValueToOption(propertyPath, propertyValue, true);
unwrappedPropertyValue = ko.unwrap(propertyValue)
}, null, {
disposeWhenNodeIsRemoved: domNode
});
if (isPlainObject(unwrappedPropertyValue)) {
if (!optionsByReference[propertyPath]) {
unwrapModel(unwrappedPropertyValue, propertyPath)
}
}
} else {
applyModelValueToOption(propertyPath, currentModel[propertyName], false)
}
};
var unwrapModel = function(model, propertyPath) {
for (var propertyName in model) {
if (model.hasOwnProperty(propertyName)) {
unwrapModelValue(model, propertyName, propertyPath ? [propertyPath, propertyName].join(".") : propertyName)
}
}
};
createComponent();
return {
controlsDescendantBindings: componentClass.subclassOf(Widget)
}
}
};
if ("dxValidator" === componentName) {
ko.bindingHandlers.dxValidator.after = editorsBindingHandlers
}
};
registerComponentCallbacks.add(function(name, componentClass) {
registerComponentKoBinding(name, componentClass)
});