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Cleanup KnockoutJS and use ECMASCRIPT_2018 for its closure compiler

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This commit is contained in:
djmaze 2021-10-01 17:36:21 +02:00
parent bcc3dc51ef
commit 4a403df168
6 changed files with 136 additions and 217 deletions
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81
vendors/knockout/src/components/componentBinding.js vendored
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@ -25,14 +25,12 @@
ko.utils.domNodeDisposal.addDisposeCallback(element, disposeAssociatedComponentViewModel);
ko.computed(() => {
var value = ko.utils.unwrapObservable(valueAccessor()),
componentName, componentParams;
var componentName = ko.utils.unwrapObservable(valueAccessor()),
componentParams;
if (typeof value === 'string') {
componentName = value;
} else {
componentName = ko.utils.unwrapObservable(value['name']);
componentParams = ko.utils.unwrapObservable(value['params']);
if (typeof componentName !== 'string') {
componentParams = ko.utils.unwrapObservable(componentName['params']);
componentName = ko.utils.unwrapObservable(componentName['name']);
}
if (!componentName) {
@ -43,39 +41,33 @@
var loadingOperationId = currentLoadingOperationId = ++componentLoadingOperationUniqueId;
ko.components.get(componentName, componentDefinition => {
// If this is not the current load operation for this element, ignore it.
if (currentLoadingOperationId !== loadingOperationId) {
return;
}
// If this is the current load operation for this element
if (currentLoadingOperationId === loadingOperationId) {
// Clean up previous state
disposeAssociatedComponentViewModel();
// Clean up previous state
disposeAssociatedComponentViewModel();
// Instantiate and bind new component. Implicitly this cleans any old DOM nodes.
if (!componentDefinition) {
throw new Error('Unknown component \'' + componentName + '\'');
}
// cloneTemplateIntoElement
var template = componentDefinition['template'];
if (!template) {
throw new Error('Component \'' + componentName + '\' has no template');
}
ko.virtualElements.setDomNodeChildren(element, ko.utils.cloneNodes(template));
// Instantiate and bind new component. Implicitly this cleans any old DOM nodes.
if (!componentDefinition) {
throw new Error('Unknown component \'' + componentName + '\'');
}
cloneTemplateIntoElement(componentName, componentDefinition, element);
var componentInfo = {
'element': element,
'templateNodes': originalChildNodes
};
var componentViewModel = createViewModel(componentDefinition, componentParams, componentInfo),
childBindingContext = asyncContext['createChildContext'](componentViewModel, {
'extend': ctx => {
ctx['$component'] = componentViewModel;
ctx['$componentTemplateNodes'] = originalChildNodes;
}
currentViewModel = componentDefinition['createViewModel'](componentParams, {
'element': element,
'templateNodes': originalChildNodes
});
if (componentViewModel && componentViewModel['koDescendantsComplete']) {
afterRenderSub = ko.bindingEvent.subscribe(element, ko.bindingEvent.descendantsComplete, componentViewModel['koDescendantsComplete'], componentViewModel);
ko.applyBindingsToDescendants(asyncContext['createChildContext'](currentViewModel, {
'extend': ctx => {
ctx['$component'] = currentViewModel;
ctx['$componentTemplateNodes'] = originalChildNodes;
}
}), element);
}
currentViewModel = componentViewModel;
ko.applyBindingsToDescendants(childBindingContext, element);
});
}, { disposeWhenNodeIsRemoved: element });
@ -85,21 +77,4 @@
ko.virtualElements.allowedBindings['component'] = true;
function cloneTemplateIntoElement(componentName, componentDefinition, element) {
var template = componentDefinition['template'];
if (!template) {
throw new Error('Component \'' + componentName + '\' has no template');
}
var clonedNodesArray = ko.utils.cloneNodes(template);
ko.virtualElements.setDomNodeChildren(element, clonedNodesArray);
}
function createViewModel(componentDefinition, componentParams, componentInfo) {
var componentViewModelFactory = componentDefinition['createViewModel'];
return componentViewModelFactory
? componentViewModelFactory.call(componentDefinition, componentParams, componentInfo)
: componentParams; // Template-only component
}
})();