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Dropped more unused knockoutjs code

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djmaze 2020-10-29 11:15:04 +01:00
parent b79d9de1a0
commit 1d57a62ddd
14 changed files with 408 additions and 635 deletions
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2
vendors/knockout/build/fragments/source-references.js vendored
View file

@ -24,7 +24,7 @@ knockoutDebugCallback([
'src/binding/bindingAttributeSyntax.js',
'src/components/loaderRegistry.js',
'src/components/defaultLoader.js',
'src/components/customElements.js',
// 'src/components/customElements.js',
'src/components/componentBinding.js',
'src/binding/defaultBindings/attr.js',
// 'src/binding/defaultBindings/checked.js',

437
vendors/knockout/build/output/knockout-latest.debug.js vendored
View file

@ -32,187 +32,159 @@ ko.exportProperty = (owner, publicName, object) => owner[publicName] = object;
ko.version = "3.5.1-sm";
ko.exportSymbol('version', ko.version);
ko.utils = (() => {
ko.utils = {
arrayRemoveItem: (array, itemToRemove) => {
var index = array.indexOf(itemToRemove);
if (index > 0) {
array.splice(index, 1);
}
else if (index === 0) {
array.shift();
}
},
const
arrayCall = (name, arr, p1, p2) => Array.prototype[name].call(arr, p1, p2),
objectForEach = (obj, action) => obj && Object.entries(obj).forEach(prop => action(prop[0], prop[1])),
extend = (target, source) => {
source && Object.entries(source).forEach(prop => target[prop[0]] = prop[1]);
return target;
},
// For details on the pattern for changing node classes
// see: https://github.com/knockout/knockout/issues/1597
toggleDomNodeCssClass = (node, classNames, shouldHaveClass) => {
if (classNames) {
var addOrRemoveFn = shouldHaveClass ? 'add' : 'remove';
classNames.split(/\s+/).forEach(className =>
node.classList[addOrRemoveFn](className)
);
}
};
extend: (target, source) => {
source && Object.entries(source).forEach(prop => target[prop[0]] = prop[1]);
return target;
},
return {
arrayRemoveItem: (array, itemToRemove) => {
var index = array.indexOf(itemToRemove);
if (index > 0) {
array.splice(index, 1);
}
else if (index === 0) {
array.shift();
}
},
objectForEach: (obj, action) => obj && Object.entries(obj).forEach(prop => action(prop[0], prop[1])),
extend: extend,
objectMap: (source, mapping, mappingOwner) => {
if (!source)
return source;
var target = {};
Object.entries(source).forEach(prop =>
target[prop[0]] = mapping.call(mappingOwner, prop[1], prop[0], source)
);
return target;
},
objectForEach: objectForEach,
emptyDomNode: domNode => {
while (domNode.firstChild) {
ko.removeNode(domNode.firstChild);
}
},
objectMap: (source, mapping, mappingOwner) => {
if (!source)
return source;
var target = {};
Object.entries(source).forEach(prop =>
target[prop[0]] = mapping.call(mappingOwner, prop[1], prop[0], source)
);
return target;
},
moveCleanedNodesToContainerElement: nodes => {
// Ensure it's a real array, as we're about to reparent the nodes and
// we don't want the underlying collection to change while we're doing that.
var nodesArray = [...nodes];
var templateDocument = (nodesArray[0] && nodesArray[0].ownerDocument) || document;
emptyDomNode: domNode => {
while (domNode.firstChild) {
ko.removeNode(domNode.firstChild);
}
},
var container = templateDocument.createElement('div');
nodes.forEach(node => container.append(ko.cleanNode(node)));
return container;
},
moveCleanedNodesToContainerElement: nodes => {
// Ensure it's a real array, as we're about to reparent the nodes and
// we don't want the underlying collection to change while we're doing that.
var nodesArray = [...nodes];
var templateDocument = (nodesArray[0] && nodesArray[0].ownerDocument) || document;
cloneNodes: (nodesArray, shouldCleanNodes) =>
Array.prototype.map.call(nodesArray, shouldCleanNodes
? node => ko.cleanNode(node.cloneNode(true))
: node => node.cloneNode(true)),
var container = templateDocument.createElement('div');
nodes.forEach(node => container.append(ko.cleanNode(node)));
return container;
},
setDomNodeChildren: (domNode, childNodes) => {
ko.utils.emptyDomNode(domNode);
childNodes && domNode.append(...childNodes);
},
cloneNodes: (nodesArray, shouldCleanNodes) =>
arrayCall('map', nodesArray, shouldCleanNodes
? node => ko.cleanNode(node.cloneNode(true))
: node => node.cloneNode(true)
),
fixUpContinuousNodeArray: (continuousNodeArray, parentNode) => {
// Before acting on a set of nodes that were previously outputted by a template function, we have to reconcile
// them against what is in the DOM right now. It may be that some of the nodes have already been removed, or that
// new nodes might have been inserted in the middle, for example by a binding. Also, there may previously have been
// leading comment nodes (created by rewritten string-based templates) that have since been removed during binding.
// So, this function translates the old "map" output array into its best guess of the set of current DOM nodes.
//
// Rules:
// [A] Any leading nodes that have been removed should be ignored
// These most likely correspond to memoization nodes that were already removed during binding
// See https://github.com/knockout/knockout/pull/440
// [B] Any trailing nodes that have been remove should be ignored
// This prevents the code here from adding unrelated nodes to the array while processing rule [C]
// See https://github.com/knockout/knockout/pull/1903
// [C] We want to output a continuous series of nodes. So, ignore any nodes that have already been removed,
// and include any nodes that have been inserted among the previous collection
setDomNodeChildren: (domNode, childNodes) => {
ko.utils.emptyDomNode(domNode);
childNodes && domNode.append.apply(domNode, childNodes);
},
if (continuousNodeArray.length) {
// The parent node can be a virtual element; so get the real parent node
parentNode = (parentNode.nodeType === 8 && parentNode.parentNode) || parentNode;
fixUpContinuousNodeArray: (continuousNodeArray, parentNode) => {
// Before acting on a set of nodes that were previously outputted by a template function, we have to reconcile
// them against what is in the DOM right now. It may be that some of the nodes have already been removed, or that
// new nodes might have been inserted in the middle, for example by a binding. Also, there may previously have been
// leading comment nodes (created by rewritten string-based templates) that have since been removed during binding.
// So, this function translates the old "map" output array into its best guess of the set of current DOM nodes.
//
// Rules:
// [A] Any leading nodes that have been removed should be ignored
// These most likely correspond to memoization nodes that were already removed during binding
// See https://github.com/knockout/knockout/pull/440
// [B] Any trailing nodes that have been remove should be ignored
// This prevents the code here from adding unrelated nodes to the array while processing rule [C]
// See https://github.com/knockout/knockout/pull/1903
// [C] We want to output a continuous series of nodes. So, ignore any nodes that have already been removed,
// and include any nodes that have been inserted among the previous collection
// Rule [A]
while (continuousNodeArray.length && continuousNodeArray[0].parentNode !== parentNode)
continuousNodeArray.splice(0, 1);
if (continuousNodeArray.length) {
// The parent node can be a virtual element; so get the real parent node
parentNode = (parentNode.nodeType === 8 && parentNode.parentNode) || parentNode;
// Rule [B]
while (continuousNodeArray.length > 1
&& continuousNodeArray[continuousNodeArray.length - 1].parentNode !== parentNode)
continuousNodeArray.length--;
// Rule [A]
while (continuousNodeArray.length && continuousNodeArray[0].parentNode !== parentNode)
continuousNodeArray.splice(0, 1);
// Rule [B]
while (continuousNodeArray.length > 1
&& continuousNodeArray[continuousNodeArray.length - 1].parentNode !== parentNode)
continuousNodeArray.length--;
// Rule [C]
if (continuousNodeArray.length > 1) {
var current = continuousNodeArray[0], last = continuousNodeArray[continuousNodeArray.length - 1];
// Replace with the actual new continuous node set
continuousNodeArray.length = 0;
while (current !== last) {
continuousNodeArray.push(current);
current = current.nextSibling;
}
continuousNodeArray.push(last);
// Rule [C]
if (continuousNodeArray.length > 1) {
var current = continuousNodeArray[0], last = continuousNodeArray[continuousNodeArray.length - 1];
// Replace with the actual new continuous node set
continuousNodeArray.length = 0;
while (current !== last) {
continuousNodeArray.push(current);
current = current.nextSibling;
}
continuousNodeArray.push(last);
}
return continuousNodeArray;
},
}
return continuousNodeArray;
},
stringTrim: string => string == null ? '' :
string.trim ?
string.trim() :
string.toString().replace(/^[\s\xa0]+|[\s\xa0]+$/g, ''),
stringTrim: string => string == null ? '' :
string.trim ?
string.trim() :
string.toString().replace(/^[\s\xa0]+|[\s\xa0]+$/g, ''),
stringStartsWith: (string, startsWith) => {
string = string || "";
if (startsWith.length > string.length)
return false;
return string.substring(0, startsWith.length) === startsWith;
},
stringStartsWith: (string, startsWith) => {
string = string || "";
if (startsWith.length > string.length)
return false;
return string.substring(0, startsWith.length) === startsWith;
},
domNodeIsContainedBy: (node, containedByNode) =>
containedByNode.contains(node.nodeType !== 1 ? node.parentNode : node),
domNodeIsContainedBy: (node, containedByNode) =>
containedByNode.contains(node.nodeType !== 1 ? node.parentNode : node),
domNodeIsAttachedToDocument: node => ko.utils.domNodeIsContainedBy(node, node.ownerDocument.documentElement),
domNodeIsAttachedToDocument: node => ko.utils.domNodeIsContainedBy(node, node.ownerDocument.documentElement),
// For HTML elements, tagName will always be upper case; for XHTML elements, it'll be lower case.
// Possible future optimization: If we know it's an element from an XHTML document (not HTML),
// we don't need to do the .toLowerCase() as it will always be lower case anyway.
tagNameLower: element => element && element.tagName && element.tagName.toLowerCase(),
catchFunctionErrors: delegate => {
return ko['onError'] ? function () {
try {
return delegate.apply(this, arguments);
} catch (e) {
ko['onError'] && ko['onError'](e);
throw e;
}
} : delegate;
},
catchFunctionErrors: delegate => {
return ko['onError'] ? function () {
try {
return delegate.apply(this, arguments);
} catch (e) {
ko['onError'] && ko['onError'](e);
throw e;
}
} : delegate;
},
setTimeout: (handler, timeout) => setTimeout(ko.utils.catchFunctionErrors(handler), timeout),
setTimeout: (handler, timeout) => setTimeout(ko.utils.catchFunctionErrors(handler), timeout),
deferError: error => setTimeout(() => {
ko['onError'] && ko['onError'](error);
throw error;
}, 0),
deferError: error => setTimeout(() => {
ko['onError'] && ko['onError'](error);
throw error;
}, 0),
registerEventHandler: (element, eventType, handler) => {
var wrappedHandler = ko.utils.catchFunctionErrors(handler);
registerEventHandler: (element, eventType, handler) => {
var wrappedHandler = ko.utils.catchFunctionErrors(handler);
element.addEventListener(eventType, wrappedHandler, false);
},
element.addEventListener(eventType, wrappedHandler, false);
},
triggerEvent: (element, eventType) => {
if (!(element && element.nodeType))
throw new Error("element must be a DOM node when calling triggerEvent");
triggerEvent: (element, eventType) => {
if (!(element && element.nodeType))
throw new Error("element must be a DOM node when calling triggerEvent");
element.dispatchEvent(new Event(eventType));
},
element.dispatchEvent(new Event(eventType));
},
unwrapObservable: value => ko.isObservable(value) ? value() : value,
unwrapObservable: value => ko.isObservable(value) ? value() : value,
peekObservable: value => ko.isObservable(value) ? value.peek() : value,
toggleDomNodeCssClass: toggleDomNodeCssClass,
setTextContent: (element, textContent) =>
element.textContent = ko.utils.unwrapObservable(textContent) || ""
}
})();
setTextContent: (element, textContent) =>
element.textContent = ko.utils.unwrapObservable(textContent) || ""
};
ko.exportSymbol('utils', ko.utils);
ko.exportSymbol('unwrap', ko.utils.unwrapObservable); // Convenient shorthand, because this is used so commonly
@ -1659,12 +1631,12 @@ ko.pureComputed = (evaluatorFunctionOrOptions, evaluatorFunctionTarget) => {
// that are arbitrary objects. This is very convenient when implementing things like cascading dropdowns.
ko.selectExtensions = {
readValue : element => {
switch (ko.utils.tagNameLower(element)) {
case 'option':
switch (element.nodeName) {
case 'OPTION':
if (element[hasDomDataExpandoProperty] === true)
return ko.utils.domData.get(element, ko.bindingHandlers.options.optionValueDomDataKey);
return element.value;
case 'select':
case 'SELECT':
return element.selectedIndex >= 0 ? ko.selectExtensions.readValue(element.options[element.selectedIndex]) : undefined;
default:
return element.value;
@ -1672,8 +1644,8 @@ ko.pureComputed = (evaluatorFunctionOrOptions, evaluatorFunctionTarget) => {
},
writeValue: (element, value, allowUnset) => {
switch (ko.utils.tagNameLower(element)) {
case 'option':
switch (element.nodeName) {
case 'OPTION':
if (typeof value === "string") {
ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, undefined);
delete element[hasDomDataExpandoProperty];
@ -1688,7 +1660,7 @@ ko.pureComputed = (evaluatorFunctionOrOptions, evaluatorFunctionTarget) => {
element.value = typeof value === "number" ? value : "";
}
break;
case 'select':
case 'SELECT':
if (value === "" || value === null) // A blank string or null value will select the caption
value = undefined;
var selection = -1;
@ -2058,8 +2030,7 @@ ko.expressionRewriting = (() => {
'nodeHasBindings': node => {
switch (node.nodeType) {
case 1: // Element
return node.getAttribute(defaultBindingAttributeName) != null
|| ko.components['getComponentNameForNode'](node);
return node.getAttribute(defaultBindingAttributeName) != null;
case 8: // Comment node
return ko.virtualElements.hasBindingValue(node);
default: return false;
@ -2067,15 +2038,13 @@ ko.expressionRewriting = (() => {
},
'getBindings': function(node, bindingContext) {
var bindingsString = this['getBindingsString'](node, bindingContext),
parsedBindings = bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node) : null;
return ko.components.addBindingsForCustomElement(parsedBindings, node, bindingContext, /* valueAccessors */ false);
var bindingsString = this['getBindingsString'](node, bindingContext);
return bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node) : null;
},
'getBindingAccessors': function(node, bindingContext) {
var bindingsString = this['getBindingsString'](node, bindingContext),
parsedBindings = bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node, { 'valueAccessors': true }) : null;
return ko.components.addBindingsForCustomElement(parsedBindings, node, bindingContext, /* valueAccessors */ true);
var bindingsString = this['getBindingsString'](node, bindingContext);
return bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node, { 'valueAccessors': true }) : null;
},
// The following function is only used internally by this default provider.
@ -2126,18 +2095,6 @@ ko.expressionRewriting = (() => {
ko.bindingHandlers = {};
// The following element types will not be recursed into during binding.
var bindingDoesNotRecurseIntoElementTypes = {
// Don't want bindings that operate on text nodes to mutate <script> and <textarea> contents,
// because it's unexpected and a potential XSS issue.
// Also bindings should not operate on <template> elements since this breaks in Internet Explorer
// and because such elements' contents are always intended to be bound in a different context
// from where they appear in the document.
'script': true,
'textarea': true,
'template': true
};
// Use an overridable method for retrieving binding handlers so that plugins may support dynamically created handlers
ko['getBindingHandler'] = bindingKey => ko.bindingHandlers[bindingKey];
@ -2446,7 +2403,12 @@ ko.expressionRewriting = (() => {
if (shouldApplyBindings)
bindingContextForDescendants = applyBindingsToNodeInternal(nodeVerified, null, bindingContext)['bindingContextForDescendants'];
if (bindingContextForDescendants && !bindingDoesNotRecurseIntoElementTypes[ko.utils.tagNameLower(nodeVerified)]) {
// Don't want bindings that operate on text nodes to mutate <script> and <textarea> contents,
// because it's unexpected and a potential XSS issue.
// Also bindings should not operate on <template> elements since this breaks in Internet Explorer
// and because such elements' contents are always intended to be bound in a different context
// from where they appear in the document.
if (bindingContextForDescendants && nodeVerified.matches && !nodeVerified.matches('SCRIPT,TEXTAREA,TEMPLATE')) {
applyBindingsToDescendantsInternal(bindingContextForDescendants, nodeVerified);
}
}
@ -2956,7 +2918,7 @@ ko.expressionRewriting = (() => {
}
function cloneNodesFromTemplateSourceElement(elemInstance) {
if ('template' == ko.utils.tagNameLower(elemInstance)) {
if (elemInstance.matches('TEMPLATE')) {
// For browsers with proper <template> element support (i.e., where the .content property
// gives a document fragment), use that document fragment.
if (elemInstance.content instanceof DocumentFragment) {
@ -2977,88 +2939,6 @@ ko.expressionRewriting = (() => {
// By default, the default loader is the only registered component loader
ko.components['loaders'].push(ko.components.defaultLoader);
})();
(() => {
// Overridable API for determining which component name applies to a given node. By overriding this,
// you can for example map specific tagNames to components that are not preregistered.
ko.components['getComponentNameForNode'] = node => {
var tagNameLower = ko.utils.tagNameLower(node);
if (ko.components.isRegistered(tagNameLower)) {
// Try to determine that this node can be considered a *custom* element; see https://github.com/knockout/knockout/issues/1603
if (tagNameLower.indexOf('-') != -1 || ('' + node) == "[object HTMLUnknownElement]") {
return tagNameLower;
}
}
};
ko.components.addBindingsForCustomElement = (allBindings, node, bindingContext, valueAccessors) => {
// Determine if it's really a custom element matching a component
if (node.nodeType === 1) {
var componentName = ko.components['getComponentNameForNode'](node);
if (componentName) {
// It does represent a component, so add a component binding for it
allBindings = allBindings || {};
if (allBindings['component']) {
// Avoid silently overwriting some other 'component' binding that may already be on the element
throw new Error('Cannot use the "component" binding on a custom element matching a component');
}
var componentBindingValue = { 'name': componentName, 'params': getComponentParamsFromCustomElement(node, bindingContext) };
allBindings['component'] = valueAccessors
? () => componentBindingValue
: componentBindingValue;
}
}
return allBindings;
}
var nativeBindingProviderInstance = new ko.bindingProvider();
function getComponentParamsFromCustomElement(elem, bindingContext) {
var paramsAttribute = elem.getAttribute('params');
if (paramsAttribute) {
var params = nativeBindingProviderInstance['parseBindingsString'](paramsAttribute, bindingContext, elem, { 'valueAccessors': true, 'bindingParams': true }),
rawParamComputedValues = ko.utils.objectMap(params, paramValue =>
ko.computed(paramValue, null, { disposeWhenNodeIsRemoved: elem })
),
result = ko.utils.objectMap(rawParamComputedValues, paramValueComputed => {
var paramValue = paramValueComputed.peek();
// Does the evaluation of the parameter value unwrap any observables?
if (!paramValueComputed.isActive()) {
// No it doesn't, so there's no need for any computed wrapper. Just pass through the supplied value directly.
// Example: "someVal: firstName, age: 123" (whether or not firstName is an observable/computed)
return paramValue;
} else {
// Yes it does. Supply a computed property that unwraps both the outer (binding expression)
// level of observability, and any inner (resulting model value) level of observability.
// This means the component doesn't have to worry about multiple unwrapping. If the value is a
// writable observable, the computed will also be writable and pass the value on to the observable.
return ko.computed({
'read': () => ko.utils.unwrapObservable(paramValueComputed()),
'write': ko.isWriteableObservable(paramValue) && (value => paramValueComputed()(value)),
disposeWhenNodeIsRemoved: elem
});
}
});
// Give access to the raw computeds, as long as that wouldn't overwrite any custom param also called '$raw'
// This is in case the developer wants to react to outer (binding) observability separately from inner
// (model value) observability, or in case the model value observable has subobservables.
if (!Object.prototype.hasOwnProperty.call(result, '$raw')) {
result['$raw'] = rawParamComputedValues;
}
return result;
}
// For consistency, absence of a "params" attribute is treated the same as the presence of
// any empty one. Otherwise component viewmodels need special code to check whether or not
// 'params' or 'params.$raw' is null/undefined before reading subproperties, which is annoying.
return { '$raw': {} };
}
})();
(() => {
var componentLoadingOperationUniqueId = 0;
@ -3199,7 +3079,14 @@ ko.bindingHandlers['attr'] = {
});
}
};
var classesWrittenByBindingKey = '__ko__cssValue';
var classesWrittenByBindingKey = '__ko__cssValue',
toggleClasses = (node, classNames, force) => {
if (classNames) {
classNames.split(/\s+/).forEach(className =>
node.classList.toggle(className, force)
);
}
};
ko.bindingHandlers['css'] = {
'update': (element, valueAccessor) => {
@ -3207,13 +3094,13 @@ ko.bindingHandlers['css'] = {
if (value !== null && typeof value == "object") {
ko.utils.objectForEach(value, (className, shouldHaveClass) => {
shouldHaveClass = ko.utils.unwrapObservable(shouldHaveClass);
ko.utils.toggleDomNodeCssClass(element, className, shouldHaveClass);
toggleClasses(element, className, !!shouldHaveClass);
});
} else {
value = ko.utils.stringTrim(value);
ko.utils.toggleDomNodeCssClass(element, element[classesWrittenByBindingKey], false);
toggleClasses(element, element[classesWrittenByBindingKey], false);
element[classesWrittenByBindingKey] = value;
ko.utils.toggleDomNodeCssClass(element, value, true);
toggleClasses(element, value, true);
}
}
};
@ -3283,7 +3170,8 @@ ko.bindingHandlers['foreach'] = {
makeTemplateValueAccessor: valueAccessor => {
return () => {
var modelValue = valueAccessor(),
unwrappedValue = ko.utils.peekObservable(modelValue); // Unwrap without setting a dependency here
// Unwrap without setting a dependency here
unwrappedValue = ko.isObservable(modelValue) ? modelValue.peek() : modelValue;
// If unwrappedValue is the array, pass in the wrapped value on its own
// The value will be unwrapped and tracked within the template binding
@ -3450,7 +3338,7 @@ makeWithIfBinding('with', true /* isWith */);
var captionPlaceholder = {};
ko.bindingHandlers['options'] = {
'init': element => {
if (ko.utils.tagNameLower(element) !== "select")
if (!element.matches("SELECT"))
throw new Error("options binding applies only to SELECT elements");
// Remove all existing <option>s.
@ -3744,8 +3632,8 @@ ko.bindingHandlers['textinput'] = {
};
ko.bindingHandlers['value'] = {
'init': (element, valueAccessor, allBindings) => {
var tagName = ko.utils.tagNameLower(element),
isInputElement = tagName == "input";
var isSelectElement = element.matches("SELECT"),
isInputElement = element.matches("INPUT");
// If the value binding is placed on a radio/checkbox, then just pass through to checkedValue and quit
if (isInputElement && (element.type == "checkbox" || element.type == "radio")) {
@ -3823,7 +3711,7 @@ ko.bindingHandlers['value'] = {
var valueHasChanged = newValue !== elementValue;
if (valueHasChanged || elementValue === undefined) {
if (tagName === "select") {
if (isSelectElement) {
var allowUnset = allBindings.get('valueAllowUnset');
ko.selectExtensions.writeValue(element, newValue, allowUnset);
if (!allowUnset && newValue !== ko.selectExtensions.readValue(element)) {
@ -3838,7 +3726,7 @@ ko.bindingHandlers['value'] = {
};
}
if (tagName === "select") {
if (isSelectElement) {
var updateFromModelComputed;
ko.bindingEvent.subscribe(element, ko.bindingEvent.childrenComplete, () => {
if (!updateFromModelComputed) {
@ -3912,9 +3800,8 @@ makeEventHandlerShortcut('click');
this.domElement = element;
if (element) {
var tagNameLower = ko.utils.tagNameLower(element);
this.templateType =
tagNameLower == "template" && element.content && element.content.nodeType === 11 ? templateTemplate :
element.matches("TEMPLATE") && element.content && element.content.nodeType === 11 ? templateTemplate :
templateElement;
}
}

167
vendors/knockout/build/output/knockout-latest.js vendored
View file

@ -4,87 +4,86 @@
* License: MIT (http://www.opensource.org/licenses/mit-license.php)
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g);else{e=e.replace(/-(\w)/g,(m,d)=>d.toUpperCase());var k=b.style[e];b.style[e]=g;g===k||b.style[e]!=k||isNaN(g)||(b.style[e]=g+"px")}})}};a.c.submit={init:(b,c,e,g,k)=>{if("function"!=typeof c())throw Error("The value for a submit binding must be a function");a.a.K(b,"submit",m=>{var d=c();try{var f=d.call(k.$data,b)}finally{!0!==f&&(m.preventDefault?m.preventDefault():m.returnValue=!1)}})}};a.c.text={init:()=>({controlsDescendantBindings:!0}),update:(b,c)=>a.a.rb(b,c())};a.h.fa.text=!0;a.c.textInput=
{init:(b,c,e)=>{var g=b.value,k,m,d=()=>{clearTimeout(k);m=k=void 0;var h=b.value;g!==h&&(g=h,a.G.yb(c(),e,"textInput",h))},f=()=>{var h=a.a.g(c());if(null===h||void 0===h)h="";void 0!==m&&h===m?a.a.setTimeout(f,4):b.value!==h&&(b.value=h,g=b.value)};a.a.K(b,"input",d);a.a.K(b,"change",d);a.a.K(b,"blur",d);a.i(f,null,{j:b})}};a.G.Qa.textInput=!0;a.c.textinput={preprocess:(b,c,e)=>e("textInput",b)};a.c.value={init:(b,c,e)=>{var g=b.matches("SELECT"),k=b.matches("INPUT");if(!k||"checkbox"!=b.type&&
"radio"!=b.type){var m=[],d=e.get("valueUpdate"),f=null;d&&("string"==typeof d?m=[d]:m=d?d.filter((p,u)=>d.indexOf(p)===u):[],a.a.Da(m,"change"));var h=()=>{f=null;var p=c(),u=a.A.S(b);a.G.yb(p,e,"value",u)};m.forEach(p=>{var u=h;a.a.Pc(p,"after")&&(u=()=>{f=a.A.S(b);a.a.setTimeout(h,0)},p=p.substring(5));a.a.K(b,p,u)});var n=k&&"file"==b.type?()=>{var p=a.a.g(c());null===p||void 0===p||""===p?b.value="":a.m.H(h)}:()=>{var p=a.a.g(c()),u=a.A.S(b);if(null!==f&&p===f)a.a.setTimeout(n,0);else if(p!==
u||void 0===u)g?(u=e.get("valueAllowUnset"),a.A.Ta(b,p,u),u||p===a.A.S(b)||a.m.H(h)):a.A.Ta(b,p)};if(g){var r;a.f.subscribe(b,a.f.B,()=>{r?e.get("valueAllowUnset")?n():h():(a.a.K(b,"change",h),r=a.i(n,null,{j:b}))},null,{notifyImmediately:!0})}else a.a.K(b,"change",h),a.i(n,null,{j:b})}else a.Xa(b,{checkedValue:c})},update:()=>{}};a.G.Qa.value=!0;a.c.visible={update:(b,c)=>{c=a.a.g(c());var e="none"!=b.style.display;c&&!e?b.style.display="":e&&!c&&(b.style.display="none")}};a.c.hidden={update:(b,
c)=>b.hidden=!!a.a.g(c())};(function(b){a.c[b]={init:function(c,e,g,k,m){return a.c.event.init.call(this,c,()=>({[b]:e()}),g,k,m)}}})("click");(()=>{a.D={};a.D.C=function(e){if(this.C=e)this.xb=e.matches("TEMPLATE")&&e.content&&11===e.content.nodeType?3:4};a.D.C.prototype.text=function(){if(0==arguments.length)return this.C.innerHTML;a.a.fc(this.C,arguments[0])};var b=a.a.b.V()+"_";a.D.C.prototype.data=function(e){if(1===arguments.length)return a.a.b.get(this.C,b+e);a.a.b.set(this.C,b+e,arguments[1])};
var c=a.a.b.V();a.D.C.prototype.nodes=function(){var e=this.C;if(0==arguments.length){var g=a.a.b.get(e,c)||{},k=g.Ga||(3===this.xb?e.content:4===this.xb?e:void 0);if(!k||g.oc){var m=this.text();m&&m!==g.ya&&(k=a.a.Ic(m,e.ownerDocument),a.a.b.set(e,c,{Ga:k,ya:m,oc:!0}))}return k}g=arguments[0];void 0!==this.xb&&this.text("");a.a.b.set(e,c,{Ga:g})};a.D.$=function(e){this.C=e};a.D.$.prototype=new a.D.C;a.D.$.prototype.constructor=a.D.$;a.D.$.prototype.text=function(){if(0==arguments.length){var e=a.a.b.get(this.C,
c)||{};void 0===e.ya&&e.Ga&&(e.ya=e.Ga.innerHTML);return e.ya}a.a.b.set(this.C,c,{ya:arguments[0]})}})();(()=>{function b(d,f){if(d.length){var h=d[0],n=d[d.length-1],r=h.parentNode,p=a.aa.instance,u=p.preprocessNode;if(u){g(h,n,(x,v)=>{var l=x.previousSibling,q=u.call(p,x);q&&(x===h&&(h=q[0]||v),x===n&&(n=q[q.length-1]||l))});d.length=0;if(!h)return;h===n?d.push(h):(d.push(h,n),a.a.ua(d,r))}g(h,n,x=>{1!==x.nodeType&&8!==x.nodeType||a.Ib(f,x)});a.a.ua(d,r)}}function c(d,f,h,n,r){r=r||{};var p=(d&&
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p);h=!0;break;case "ignoreTargetNode":break;default:throw Error("Unknown renderMode: "+f);}h&&(b(p,n),r.afterRender&&a.m.H(r.afterRender,null,[p,n[r.as||"$data"]]),"replaceChildren"==f&&a.f.notify(d,a.f.B));return p}function e(d,f,h){return a.O(d)?d():"function"===typeof d?d(f,h):d}var g=(d,f,h)=>{var n;for(f=a.h.nextSibling(f);d&&(n=d)!==f;)d=a.h.nextSibling(n),h(n,d)};a.Mc=function(d,f,h,n){h=h||{};var r=r||"replaceChildren";if(n){var p=n.nodeType?n:0<n.length?n[0]:null;return a.i(()=>{var u=f&&
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q=!1===h.includeDestroyed;if(q||h.beforeRemove||!a.Yb(f))return a.i(()=>{var w=a.a.g(f)||[];"undefined"==typeof w.length&&(w=[w]);q&&(w=w.filter(A=>A||null==A));p(w)},null,{j:n});p(f.I());var t=f.subscribe(w=>{p(f(),w)},null,"arrayChange");t.j(n);return t};var k=a.a.b.V(),m=a.a.b.V();a.c.template={init:(d,f)=>{f=a.a.g(f());if("string"==typeof f||"name"in f)a.h.ta(d);else if("nodes"in f){f=f.nodes||[];if(a.O(f))throw Error('The "nodes" option must be a plain, non-observable array.');let h=f[0]&&f[0].parentNode;
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t,l++)a.h.Xb(g,t,K);!z.Cc&&f&&(f(z.ga,z.R,z.La),z.Cc=!0,K=z.R[z.R.length-1])}J&&g.ownerDocument.activeElement!=J&&J.focus();p(d.beforeRemove,A);for(k=0;k<A.length;++k)A[k].ga=e;p(d.afterMove,y);p(d.afterAdd,E)}})();C.ko=Z})(this);

19
vendors/knockout/src/binding/bindingAttributeSyntax.js vendored
View file

@ -6,18 +6,6 @@
ko.bindingHandlers = {};
// The following element types will not be recursed into during binding.
var bindingDoesNotRecurseIntoElementTypes = {
// Don't want bindings that operate on text nodes to mutate <script> and <textarea> contents,
// because it's unexpected and a potential XSS issue.
// Also bindings should not operate on <template> elements since this breaks in Internet Explorer
// and because such elements' contents are always intended to be bound in a different context
// from where they appear in the document.
'script': true,
'textarea': true,
'template': true
};
// Use an overridable method for retrieving binding handlers so that plugins may support dynamically created handlers
ko['getBindingHandler'] = bindingKey => ko.bindingHandlers[bindingKey];
@ -326,7 +314,12 @@
if (shouldApplyBindings)
bindingContextForDescendants = applyBindingsToNodeInternal(nodeVerified, null, bindingContext)['bindingContextForDescendants'];
if (bindingContextForDescendants && !bindingDoesNotRecurseIntoElementTypes[ko.utils.tagNameLower(nodeVerified)]) {
// Don't want bindings that operate on text nodes to mutate <script> and <textarea> contents,
// because it's unexpected and a potential XSS issue.
// Also bindings should not operate on <template> elements since this breaks in Internet Explorer
// and because such elements' contents are always intended to be bound in a different context
// from where they appear in the document.
if (bindingContextForDescendants && nodeVerified.matches && !nodeVerified.matches('SCRIPT,TEXTAREA,TEMPLATE')) {
applyBindingsToDescendantsInternal(bindingContextForDescendants, nodeVerified);
}
}

13
vendors/knockout/src/binding/bindingProvider.js vendored
View file

@ -9,8 +9,7 @@
'nodeHasBindings': node => {
switch (node.nodeType) {
case 1: // Element
return node.getAttribute(defaultBindingAttributeName) != null
|| ko.components['getComponentNameForNode'](node);
return node.getAttribute(defaultBindingAttributeName) != null;
case 8: // Comment node
return ko.virtualElements.hasBindingValue(node);
default: return false;
@ -18,15 +17,13 @@
},
'getBindings': function(node, bindingContext) {
var bindingsString = this['getBindingsString'](node, bindingContext),
parsedBindings = bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node) : null;
return ko.components.addBindingsForCustomElement(parsedBindings, node, bindingContext, /* valueAccessors */ false);
var bindingsString = this['getBindingsString'](node, bindingContext);
return bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node) : null;
},
'getBindingAccessors': function(node, bindingContext) {
var bindingsString = this['getBindingsString'](node, bindingContext),
parsedBindings = bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node, { 'valueAccessors': true }) : null;
return ko.components.addBindingsForCustomElement(parsedBindings, node, bindingContext, /* valueAccessors */ true);
var bindingsString = this['getBindingsString'](node, bindingContext);
return bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node, { 'valueAccessors': true }) : null;
},
// The following function is only used internally by this default provider.

15
vendors/knockout/src/binding/defaultBindings/css.js vendored
View file

@ -1,4 +1,11 @@
var classesWrittenByBindingKey = '__ko__cssValue';
var classesWrittenByBindingKey = '__ko__cssValue',
toggleClasses = (node, classNames, force) => {
if (classNames) {
classNames.split(/\s+/).forEach(className =>
node.classList.toggle(className, force)
);
}
};
ko.bindingHandlers['css'] = {
'update': (element, valueAccessor) => {
@ -6,13 +13,13 @@ ko.bindingHandlers['css'] = {
if (value !== null && typeof value == "object") {
ko.utils.objectForEach(value, (className, shouldHaveClass) => {
shouldHaveClass = ko.utils.unwrapObservable(shouldHaveClass);
ko.utils.toggleDomNodeCssClass(element, className, shouldHaveClass);
toggleClasses(element, className, !!shouldHaveClass);
});
} else {
value = ko.utils.stringTrim(value);
ko.utils.toggleDomNodeCssClass(element, element[classesWrittenByBindingKey], false);
toggleClasses(element, element[classesWrittenByBindingKey], false);
element[classesWrittenByBindingKey] = value;
ko.utils.toggleDomNodeCssClass(element, value, true);
toggleClasses(element, value, true);
}
}
};

3
vendors/knockout/src/binding/defaultBindings/foreach.js vendored
View file

@ -4,7 +4,8 @@ ko.bindingHandlers['foreach'] = {
makeTemplateValueAccessor: valueAccessor => {
return () => {
var modelValue = valueAccessor(),
unwrappedValue = ko.utils.peekObservable(modelValue); // Unwrap without setting a dependency here
// Unwrap without setting a dependency here
unwrappedValue = ko.isObservable(modelValue) ? modelValue.peek() : modelValue;
// If unwrappedValue is the array, pass in the wrapped value on its own
// The value will be unwrapped and tracked within the template binding

2
vendors/knockout/src/binding/defaultBindings/options.js vendored
View file

@ -1,7 +1,7 @@
var captionPlaceholder = {};
ko.bindingHandlers['options'] = {
'init': element => {
if (ko.utils.tagNameLower(element) !== "select")
if (!element.matches("SELECT"))
throw new Error("options binding applies only to SELECT elements");
// Remove all existing <option>s.

8
vendors/knockout/src/binding/defaultBindings/value.js vendored
View file

@ -1,7 +1,7 @@
ko.bindingHandlers['value'] = {
'init': (element, valueAccessor, allBindings) => {
var tagName = ko.utils.tagNameLower(element),
isInputElement = tagName == "input";
var isSelectElement = element.matches("SELECT"),
isInputElement = element.matches("INPUT");
// If the value binding is placed on a radio/checkbox, then just pass through to checkedValue and quit
if (isInputElement && (element.type == "checkbox" || element.type == "radio")) {
@ -79,7 +79,7 @@ ko.bindingHandlers['value'] = {
var valueHasChanged = newValue !== elementValue;
if (valueHasChanged || elementValue === undefined) {
if (tagName === "select") {
if (isSelectElement) {
var allowUnset = allBindings.get('valueAllowUnset');
ko.selectExtensions.writeValue(element, newValue, allowUnset);
if (!allowUnset && newValue !== ko.selectExtensions.readValue(element)) {
@ -94,7 +94,7 @@ ko.bindingHandlers['value'] = {
};
}
if (tagName === "select") {
if (isSelectElement) {
var updateFromModelComputed;
ko.bindingEvent.subscribe(element, ko.bindingEvent.childrenComplete, () => {
if (!updateFromModelComputed) {

12
vendors/knockout/src/binding/selectExtensions.js vendored
View file

@ -6,12 +6,12 @@
// that are arbitrary objects. This is very convenient when implementing things like cascading dropdowns.
ko.selectExtensions = {
readValue : element => {
switch (ko.utils.tagNameLower(element)) {
case 'option':
switch (element.nodeName) {
case 'OPTION':
if (element[hasDomDataExpandoProperty] === true)
return ko.utils.domData.get(element, ko.bindingHandlers.options.optionValueDomDataKey);
return element.value;
case 'select':
case 'SELECT':
return element.selectedIndex >= 0 ? ko.selectExtensions.readValue(element.options[element.selectedIndex]) : undefined;
default:
return element.value;
@ -19,8 +19,8 @@
},
writeValue: (element, value, allowUnset) => {
switch (ko.utils.tagNameLower(element)) {
case 'option':
switch (element.nodeName) {
case 'OPTION':
if (typeof value === "string") {
ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, undefined);
delete element[hasDomDataExpandoProperty];
@ -35,7 +35,7 @@
element.value = typeof value === "number" ? value : "";
}
break;
case 'select':
case 'SELECT':
if (value === "" || value === null) // A blank string or null value will select the caption
value = undefined;
var selection = -1;

82
vendors/knockout/src/components/customElements.js vendored
View file

@ -1,82 +0,0 @@
(() => {
// Overridable API for determining which component name applies to a given node. By overriding this,
// you can for example map specific tagNames to components that are not preregistered.
ko.components['getComponentNameForNode'] = node => {
var tagNameLower = ko.utils.tagNameLower(node);
if (ko.components.isRegistered(tagNameLower)) {
// Try to determine that this node can be considered a *custom* element; see https://github.com/knockout/knockout/issues/1603
if (tagNameLower.indexOf('-') != -1 || ('' + node) == "[object HTMLUnknownElement]") {
return tagNameLower;
}
}
};
ko.components.addBindingsForCustomElement = (allBindings, node, bindingContext, valueAccessors) => {
// Determine if it's really a custom element matching a component
if (node.nodeType === 1) {
var componentName = ko.components['getComponentNameForNode'](node);
if (componentName) {
// It does represent a component, so add a component binding for it
allBindings = allBindings || {};
if (allBindings['component']) {
// Avoid silently overwriting some other 'component' binding that may already be on the element
throw new Error('Cannot use the "component" binding on a custom element matching a component');
}
var componentBindingValue = { 'name': componentName, 'params': getComponentParamsFromCustomElement(node, bindingContext) };
allBindings['component'] = valueAccessors
? () => componentBindingValue
: componentBindingValue;
}
}
return allBindings;
}
var nativeBindingProviderInstance = new ko.bindingProvider();
function getComponentParamsFromCustomElement(elem, bindingContext) {
var paramsAttribute = elem.getAttribute('params');
if (paramsAttribute) {
var params = nativeBindingProviderInstance['parseBindingsString'](paramsAttribute, bindingContext, elem, { 'valueAccessors': true, 'bindingParams': true }),
rawParamComputedValues = ko.utils.objectMap(params, paramValue =>
ko.computed(paramValue, null, { disposeWhenNodeIsRemoved: elem })
),
result = ko.utils.objectMap(rawParamComputedValues, paramValueComputed => {
var paramValue = paramValueComputed.peek();
// Does the evaluation of the parameter value unwrap any observables?
if (!paramValueComputed.isActive()) {
// No it doesn't, so there's no need for any computed wrapper. Just pass through the supplied value directly.
// Example: "someVal: firstName, age: 123" (whether or not firstName is an observable/computed)
return paramValue;
} else {
// Yes it does. Supply a computed property that unwraps both the outer (binding expression)
// level of observability, and any inner (resulting model value) level of observability.
// This means the component doesn't have to worry about multiple unwrapping. If the value is a
// writable observable, the computed will also be writable and pass the value on to the observable.
return ko.computed({
'read': () => ko.utils.unwrapObservable(paramValueComputed()),
'write': ko.isWriteableObservable(paramValue) && (value => paramValueComputed()(value)),
disposeWhenNodeIsRemoved: elem
});
}
});
// Give access to the raw computeds, as long as that wouldn't overwrite any custom param also called '$raw'
// This is in case the developer wants to react to outer (binding) observability separately from inner
// (model value) observability, or in case the model value observable has subobservables.
if (!Object.prototype.hasOwnProperty.call(result, '$raw')) {
result['$raw'] = rawParamComputedValues;
}
return result;
}
// For consistency, absence of a "params" attribute is treated the same as the presence of
// any empty one. Otherwise component viewmodels need special code to check whether or not
// 'params' or 'params.$raw' is null/undefined before reading subproperties, which is annoying.
return { '$raw': {} };
}
})();

2
vendors/knockout/src/components/defaultLoader.js vendored
View file

@ -145,7 +145,7 @@
}
function cloneNodesFromTemplateSourceElement(elemInstance) {
if ('template' == ko.utils.tagNameLower(elemInstance)) {
if (elemInstance.matches('TEMPLATE')) {
// For browsers with proper <template> element support (i.e., where the .content property
// gives a document fragment), use that document fragment.
if (elemInstance.content instanceof DocumentFragment) {

3
vendors/knockout/src/templating/templateSources.js vendored
View file

@ -35,9 +35,8 @@
this.domElement = element;
if (element) {
var tagNameLower = ko.utils.tagNameLower(element);
this.templateType =
tagNameLower == "template" && element.content && element.content.nodeType === 11 ? templateTemplate :
element.matches("TEMPLATE") && element.content && element.content.nodeType === 11 ? templateTemplate :
templateElement;
}
}

278
vendors/knockout/src/utils.js vendored
View file

@ -1,184 +1,156 @@
ko.utils = (() => {
ko.utils = {
arrayRemoveItem: (array, itemToRemove) => {
var index = array.indexOf(itemToRemove);
if (index > 0) {
array.splice(index, 1);
}
else if (index === 0) {
array.shift();
}
},
const
arrayCall = (name, arr, p1, p2) => Array.prototype[name].call(arr, p1, p2),
objectForEach = (obj, action) => obj && Object.entries(obj).forEach(prop => action(prop[0], prop[1])),
extend = (target, source) => {
source && Object.entries(source).forEach(prop => target[prop[0]] = prop[1]);
return target;
},
// For details on the pattern for changing node classes
// see: https://github.com/knockout/knockout/issues/1597
toggleDomNodeCssClass = (node, classNames, shouldHaveClass) => {
if (classNames) {
var addOrRemoveFn = shouldHaveClass ? 'add' : 'remove';
classNames.split(/\s+/).forEach(className =>
node.classList[addOrRemoveFn](className)
);
}
};
extend: (target, source) => {
source && Object.entries(source).forEach(prop => target[prop[0]] = prop[1]);
return target;
},
return {
arrayRemoveItem: (array, itemToRemove) => {
var index = array.indexOf(itemToRemove);
if (index > 0) {
array.splice(index, 1);
}
else if (index === 0) {
array.shift();
}
},
objectForEach: (obj, action) => obj && Object.entries(obj).forEach(prop => action(prop[0], prop[1])),
extend: extend,
objectMap: (source, mapping, mappingOwner) => {
if (!source)
return source;
var target = {};
Object.entries(source).forEach(prop =>
target[prop[0]] = mapping.call(mappingOwner, prop[1], prop[0], source)
);
return target;
},
objectForEach: objectForEach,
emptyDomNode: domNode => {
while (domNode.firstChild) {
ko.removeNode(domNode.firstChild);
}
},
objectMap: (source, mapping, mappingOwner) => {
if (!source)
return source;
var target = {};
Object.entries(source).forEach(prop =>
target[prop[0]] = mapping.call(mappingOwner, prop[1], prop[0], source)
);
return target;
},
moveCleanedNodesToContainerElement: nodes => {
// Ensure it's a real array, as we're about to reparent the nodes and
// we don't want the underlying collection to change while we're doing that.
var nodesArray = [...nodes];
var templateDocument = (nodesArray[0] && nodesArray[0].ownerDocument) || document;
emptyDomNode: domNode => {
while (domNode.firstChild) {
ko.removeNode(domNode.firstChild);
}
},
var container = templateDocument.createElement('div');
nodes.forEach(node => container.append(ko.cleanNode(node)));
return container;
},
moveCleanedNodesToContainerElement: nodes => {
// Ensure it's a real array, as we're about to reparent the nodes and
// we don't want the underlying collection to change while we're doing that.
var nodesArray = [...nodes];
var templateDocument = (nodesArray[0] && nodesArray[0].ownerDocument) || document;
cloneNodes: (nodesArray, shouldCleanNodes) =>
Array.prototype.map.call(nodesArray, shouldCleanNodes
? node => ko.cleanNode(node.cloneNode(true))
: node => node.cloneNode(true)),
var container = templateDocument.createElement('div');
nodes.forEach(node => container.append(ko.cleanNode(node)));
return container;
},
setDomNodeChildren: (domNode, childNodes) => {
ko.utils.emptyDomNode(domNode);
childNodes && domNode.append(...childNodes);
},
cloneNodes: (nodesArray, shouldCleanNodes) =>
arrayCall('map', nodesArray, shouldCleanNodes
? node => ko.cleanNode(node.cloneNode(true))
: node => node.cloneNode(true)
),
fixUpContinuousNodeArray: (continuousNodeArray, parentNode) => {
// Before acting on a set of nodes that were previously outputted by a template function, we have to reconcile
// them against what is in the DOM right now. It may be that some of the nodes have already been removed, or that
// new nodes might have been inserted in the middle, for example by a binding. Also, there may previously have been
// leading comment nodes (created by rewritten string-based templates) that have since been removed during binding.
// So, this function translates the old "map" output array into its best guess of the set of current DOM nodes.
//
// Rules:
// [A] Any leading nodes that have been removed should be ignored
// These most likely correspond to memoization nodes that were already removed during binding
// See https://github.com/knockout/knockout/pull/440
// [B] Any trailing nodes that have been remove should be ignored
// This prevents the code here from adding unrelated nodes to the array while processing rule [C]
// See https://github.com/knockout/knockout/pull/1903
// [C] We want to output a continuous series of nodes. So, ignore any nodes that have already been removed,
// and include any nodes that have been inserted among the previous collection
setDomNodeChildren: (domNode, childNodes) => {
ko.utils.emptyDomNode(domNode);
childNodes && domNode.append.apply(domNode, childNodes);
},
if (continuousNodeArray.length) {
// The parent node can be a virtual element; so get the real parent node
parentNode = (parentNode.nodeType === 8 && parentNode.parentNode) || parentNode;
fixUpContinuousNodeArray: (continuousNodeArray, parentNode) => {
// Before acting on a set of nodes that were previously outputted by a template function, we have to reconcile
// them against what is in the DOM right now. It may be that some of the nodes have already been removed, or that
// new nodes might have been inserted in the middle, for example by a binding. Also, there may previously have been
// leading comment nodes (created by rewritten string-based templates) that have since been removed during binding.
// So, this function translates the old "map" output array into its best guess of the set of current DOM nodes.
//
// Rules:
// [A] Any leading nodes that have been removed should be ignored
// These most likely correspond to memoization nodes that were already removed during binding
// See https://github.com/knockout/knockout/pull/440
// [B] Any trailing nodes that have been remove should be ignored
// This prevents the code here from adding unrelated nodes to the array while processing rule [C]
// See https://github.com/knockout/knockout/pull/1903
// [C] We want to output a continuous series of nodes. So, ignore any nodes that have already been removed,
// and include any nodes that have been inserted among the previous collection
// Rule [A]
while (continuousNodeArray.length && continuousNodeArray[0].parentNode !== parentNode)
continuousNodeArray.splice(0, 1);
if (continuousNodeArray.length) {
// The parent node can be a virtual element; so get the real parent node
parentNode = (parentNode.nodeType === 8 && parentNode.parentNode) || parentNode;
// Rule [B]
while (continuousNodeArray.length > 1
&& continuousNodeArray[continuousNodeArray.length - 1].parentNode !== parentNode)
continuousNodeArray.length--;
// Rule [A]
while (continuousNodeArray.length && continuousNodeArray[0].parentNode !== parentNode)
continuousNodeArray.splice(0, 1);
// Rule [B]
while (continuousNodeArray.length > 1
&& continuousNodeArray[continuousNodeArray.length - 1].parentNode !== parentNode)
continuousNodeArray.length--;
// Rule [C]
if (continuousNodeArray.length > 1) {
var current = continuousNodeArray[0], last = continuousNodeArray[continuousNodeArray.length - 1];
// Replace with the actual new continuous node set
continuousNodeArray.length = 0;
while (current !== last) {
continuousNodeArray.push(current);
current = current.nextSibling;
}
continuousNodeArray.push(last);
// Rule [C]
if (continuousNodeArray.length > 1) {
var current = continuousNodeArray[0], last = continuousNodeArray[continuousNodeArray.length - 1];
// Replace with the actual new continuous node set
continuousNodeArray.length = 0;
while (current !== last) {
continuousNodeArray.push(current);
current = current.nextSibling;
}
continuousNodeArray.push(last);
}
return continuousNodeArray;
},
}
return continuousNodeArray;
},
stringTrim: string => string == null ? '' :
string.trim ?
string.trim() :
string.toString().replace(/^[\s\xa0]+|[\s\xa0]+$/g, ''),
stringTrim: string => string == null ? '' :
string.trim ?
string.trim() :
string.toString().replace(/^[\s\xa0]+|[\s\xa0]+$/g, ''),
stringStartsWith: (string, startsWith) => {
string = string || "";
if (startsWith.length > string.length)
return false;
return string.substring(0, startsWith.length) === startsWith;
},
stringStartsWith: (string, startsWith) => {
string = string || "";
if (startsWith.length > string.length)
return false;
return string.substring(0, startsWith.length) === startsWith;
},
domNodeIsContainedBy: (node, containedByNode) =>
containedByNode.contains(node.nodeType !== 1 ? node.parentNode : node),
domNodeIsContainedBy: (node, containedByNode) =>
containedByNode.contains(node.nodeType !== 1 ? node.parentNode : node),
domNodeIsAttachedToDocument: node => ko.utils.domNodeIsContainedBy(node, node.ownerDocument.documentElement),
domNodeIsAttachedToDocument: node => ko.utils.domNodeIsContainedBy(node, node.ownerDocument.documentElement),
// For HTML elements, tagName will always be upper case; for XHTML elements, it'll be lower case.
// Possible future optimization: If we know it's an element from an XHTML document (not HTML),
// we don't need to do the .toLowerCase() as it will always be lower case anyway.
tagNameLower: element => element && element.tagName && element.tagName.toLowerCase(),
catchFunctionErrors: delegate => {
return ko['onError'] ? function () {
try {
return delegate.apply(this, arguments);
} catch (e) {
ko['onError'] && ko['onError'](e);
throw e;
}
} : delegate;
},
catchFunctionErrors: delegate => {
return ko['onError'] ? function () {
try {
return delegate.apply(this, arguments);
} catch (e) {
ko['onError'] && ko['onError'](e);
throw e;
}
} : delegate;
},
setTimeout: (handler, timeout) => setTimeout(ko.utils.catchFunctionErrors(handler), timeout),
setTimeout: (handler, timeout) => setTimeout(ko.utils.catchFunctionErrors(handler), timeout),
deferError: error => setTimeout(() => {
ko['onError'] && ko['onError'](error);
throw error;
}, 0),
deferError: error => setTimeout(() => {
ko['onError'] && ko['onError'](error);
throw error;
}, 0),
registerEventHandler: (element, eventType, handler) => {
var wrappedHandler = ko.utils.catchFunctionErrors(handler);
registerEventHandler: (element, eventType, handler) => {
var wrappedHandler = ko.utils.catchFunctionErrors(handler);
element.addEventListener(eventType, wrappedHandler, false);
},
element.addEventListener(eventType, wrappedHandler, false);
},
triggerEvent: (element, eventType) => {
if (!(element && element.nodeType))
throw new Error("element must be a DOM node when calling triggerEvent");
triggerEvent: (element, eventType) => {
if (!(element && element.nodeType))
throw new Error("element must be a DOM node when calling triggerEvent");
element.dispatchEvent(new Event(eventType));
},
element.dispatchEvent(new Event(eventType));
},
unwrapObservable: value => ko.isObservable(value) ? value() : value,
unwrapObservable: value => ko.isObservable(value) ? value() : value,
peekObservable: value => ko.isObservable(value) ? value.peek() : value,
toggleDomNodeCssClass: toggleDomNodeCssClass,
setTextContent: (element, textContent) =>
element.textContent = ko.utils.unwrapObservable(textContent) || ""
}
})();
setTextContent: (element, textContent) =>
element.textContent = ko.utils.unwrapObservable(textContent) || ""
};
ko.exportSymbol('utils', ko.utils);
ko.exportSymbol('unwrap', ko.utils.unwrapObservable); // Convenient shorthand, because this is used so commonly