@angular/animations
Version:
Angular - animations integration with web-animations
307 lines • 40.4 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { sequence } from '@angular/animations';
import { isNode } from './render/shared';
export const ONE_SECOND = 1000;
export const SUBSTITUTION_EXPR_START = '{{';
export const SUBSTITUTION_EXPR_END = '}}';
export const ENTER_CLASSNAME = 'ng-enter';
export const LEAVE_CLASSNAME = 'ng-leave';
export const ENTER_SELECTOR = '.ng-enter';
export const LEAVE_SELECTOR = '.ng-leave';
export const NG_TRIGGER_CLASSNAME = 'ng-trigger';
export const NG_TRIGGER_SELECTOR = '.ng-trigger';
export const NG_ANIMATING_CLASSNAME = 'ng-animating';
export const NG_ANIMATING_SELECTOR = '.ng-animating';
export function resolveTimingValue(value) {
if (typeof value == 'number')
return value;
const matches = value.match(/^(-?[\.\d]+)(m?s)/);
if (!matches || matches.length < 2)
return 0;
return _convertTimeValueToMS(parseFloat(matches[1]), matches[2]);
}
function _convertTimeValueToMS(value, unit) {
switch (unit) {
case 's':
return value * ONE_SECOND;
default: // ms or something else
return value;
}
}
export function resolveTiming(timings, errors, allowNegativeValues) {
return timings.hasOwnProperty('duration') ?
timings :
parseTimeExpression(timings, errors, allowNegativeValues);
}
function parseTimeExpression(exp, errors, allowNegativeValues) {
const regex = /^(-?[\.\d]+)(m?s)(?:\s+(-?[\.\d]+)(m?s))?(?:\s+([-a-z]+(?:\(.+?\))?))?$/i;
let duration;
let delay = 0;
let easing = '';
if (typeof exp === 'string') {
const matches = exp.match(regex);
if (matches === null) {
errors.push(`The provided timing value "${exp}" is invalid.`);
return { duration: 0, delay: 0, easing: '' };
}
duration = _convertTimeValueToMS(parseFloat(matches[1]), matches[2]);
const delayMatch = matches[3];
if (delayMatch != null) {
delay = _convertTimeValueToMS(parseFloat(delayMatch), matches[4]);
}
const easingVal = matches[5];
if (easingVal) {
easing = easingVal;
}
}
else {
duration = exp;
}
if (!allowNegativeValues) {
let containsErrors = false;
let startIndex = errors.length;
if (duration < 0) {
errors.push(`Duration values below 0 are not allowed for this animation step.`);
containsErrors = true;
}
if (delay < 0) {
errors.push(`Delay values below 0 are not allowed for this animation step.`);
containsErrors = true;
}
if (containsErrors) {
errors.splice(startIndex, 0, `The provided timing value "${exp}" is invalid.`);
}
}
return { duration, delay, easing };
}
export function copyObj(obj, destination = {}) {
Object.keys(obj).forEach(prop => {
destination[prop] = obj[prop];
});
return destination;
}
export function normalizeStyles(styles) {
const normalizedStyles = {};
if (Array.isArray(styles)) {
styles.forEach(data => copyStyles(data, false, normalizedStyles));
}
else {
copyStyles(styles, false, normalizedStyles);
}
return normalizedStyles;
}
export function copyStyles(styles, readPrototype, destination = {}) {
if (readPrototype) {
// we make use of a for-in loop so that the
// prototypically inherited properties are
// revealed from the backFill map
for (let prop in styles) {
destination[prop] = styles[prop];
}
}
else {
copyObj(styles, destination);
}
return destination;
}
function getStyleAttributeString(element, key, value) {
// Return the key-value pair string to be added to the style attribute for the
// given CSS style key.
if (value) {
return key + ':' + value + ';';
}
else {
return '';
}
}
function writeStyleAttribute(element) {
// Read the style property of the element and manually reflect it to the
// style attribute. This is needed because Domino on platform-server doesn't
// understand the full set of allowed CSS properties and doesn't reflect some
// of them automatically.
let styleAttrValue = '';
for (let i = 0; i < element.style.length; i++) {
const key = element.style.item(i);
styleAttrValue += getStyleAttributeString(element, key, element.style.getPropertyValue(key));
}
for (const key in element.style) {
// Skip internal Domino properties that don't need to be reflected.
if (!element.style.hasOwnProperty(key) || key.startsWith('_')) {
continue;
}
const dashKey = camelCaseToDashCase(key);
styleAttrValue += getStyleAttributeString(element, dashKey, element.style[key]);
}
element.setAttribute('style', styleAttrValue);
}
export function setStyles(element, styles, formerStyles) {
if (element['style']) {
Object.keys(styles).forEach(prop => {
const camelProp = dashCaseToCamelCase(prop);
if (formerStyles && !formerStyles.hasOwnProperty(prop)) {
formerStyles[prop] = element.style[camelProp];
}
element.style[camelProp] = styles[prop];
});
// On the server set the 'style' attribute since it's not automatically reflected.
if (isNode()) {
writeStyleAttribute(element);
}
}
}
export function eraseStyles(element, styles) {
if (element['style']) {
Object.keys(styles).forEach(prop => {
const camelProp = dashCaseToCamelCase(prop);
element.style[camelProp] = '';
});
// On the server set the 'style' attribute since it's not automatically reflected.
if (isNode()) {
writeStyleAttribute(element);
}
}
}
export function normalizeAnimationEntry(steps) {
if (Array.isArray(steps)) {
if (steps.length == 1)
return steps[0];
return sequence(steps);
}
return steps;
}
export function validateStyleParams(value, options, errors) {
const params = options.params || {};
const matches = extractStyleParams(value);
if (matches.length) {
matches.forEach(varName => {
if (!params.hasOwnProperty(varName)) {
errors.push(`Unable to resolve the local animation param ${varName} in the given list of values`);
}
});
}
}
const PARAM_REGEX = new RegExp(`${SUBSTITUTION_EXPR_START}\\s*(.+?)\\s*${SUBSTITUTION_EXPR_END}`, 'g');
export function extractStyleParams(value) {
let params = [];
if (typeof value === 'string') {
let match;
while (match = PARAM_REGEX.exec(value)) {
params.push(match[1]);
}
PARAM_REGEX.lastIndex = 0;
}
return params;
}
export function interpolateParams(value, params, errors) {
const original = value.toString();
const str = original.replace(PARAM_REGEX, (_, varName) => {
let localVal = params[varName];
// this means that the value was never overridden by the data passed in by the user
if (!params.hasOwnProperty(varName)) {
errors.push(`Please provide a value for the animation param ${varName}`);
localVal = '';
}
return localVal.toString();
});
// we do this to assert that numeric values stay as they are
return str == original ? value : str;
}
export function iteratorToArray(iterator) {
const arr = [];
let item = iterator.next();
while (!item.done) {
arr.push(item.value);
item = iterator.next();
}
return arr;
}
export function mergeAnimationOptions(source, destination) {
if (source.params) {
const p0 = source.params;
if (!destination.params) {
destination.params = {};
}
const p1 = destination.params;
Object.keys(p0).forEach(param => {
if (!p1.hasOwnProperty(param)) {
p1[param] = p0[param];
}
});
}
return destination;
}
const DASH_CASE_REGEXP = /-+([a-z0-9])/g;
export function dashCaseToCamelCase(input) {
return input.replace(DASH_CASE_REGEXP, (...m) => m[1].toUpperCase());
}
function camelCaseToDashCase(input) {
return input.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
}
export function allowPreviousPlayerStylesMerge(duration, delay) {
return duration === 0 || delay === 0;
}
export function balancePreviousStylesIntoKeyframes(element, keyframes, previousStyles) {
const previousStyleProps = Object.keys(previousStyles);
if (previousStyleProps.length && keyframes.length) {
let startingKeyframe = keyframes[0];
let missingStyleProps = [];
previousStyleProps.forEach(prop => {
if (!startingKeyframe.hasOwnProperty(prop)) {
missingStyleProps.push(prop);
}
startingKeyframe[prop] = previousStyles[prop];
});
if (missingStyleProps.length) {
// tslint:disable-next-line
for (var i = 1; i < keyframes.length; i++) {
let kf = keyframes[i];
missingStyleProps.forEach(function (prop) {
kf[prop] = computeStyle(element, prop);
});
}
}
}
return keyframes;
}
export function visitDslNode(visitor, node, context) {
switch (node.type) {
case 7 /* Trigger */:
return visitor.visitTrigger(node, context);
case 0 /* State */:
return visitor.visitState(node, context);
case 1 /* Transition */:
return visitor.visitTransition(node, context);
case 2 /* Sequence */:
return visitor.visitSequence(node, context);
case 3 /* Group */:
return visitor.visitGroup(node, context);
case 4 /* Animate */:
return visitor.visitAnimate(node, context);
case 5 /* Keyframes */:
return visitor.visitKeyframes(node, context);
case 6 /* Style */:
return visitor.visitStyle(node, context);
case 8 /* Reference */:
return visitor.visitReference(node, context);
case 9 /* AnimateChild */:
return visitor.visitAnimateChild(node, context);
case 10 /* AnimateRef */:
return visitor.visitAnimateRef(node, context);
case 11 /* Query */:
return visitor.visitQuery(node, context);
case 12 /* Stagger */:
return visitor.visitStagger(node, context);
default:
throw new Error(`Unable to resolve animation metadata node #${node.type}`);
}
}
export function computeStyle(element, prop) {
return window.getComputedStyle(element)[prop];
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport {AnimateTimings, AnimationMetadata, AnimationMetadataType, AnimationOptions, sequence, ɵStyleData} from '@angular/animations';\nimport {Ast as AnimationAst, AstVisitor as AnimationAstVisitor} from './dsl/animation_ast';\nimport {AnimationDslVisitor} from './dsl/animation_dsl_visitor';\nimport {isNode} from './render/shared';\n\nexport const ONE_SECOND = 1000;\n\nexport const SUBSTITUTION_EXPR_START = '{{';\nexport const SUBSTITUTION_EXPR_END = '}}';\nexport const ENTER_CLASSNAME = 'ng-enter';\nexport const LEAVE_CLASSNAME = 'ng-leave';\nexport const ENTER_SELECTOR = '.ng-enter';\nexport const LEAVE_SELECTOR = '.ng-leave';\nexport const NG_TRIGGER_CLASSNAME = 'ng-trigger';\nexport const NG_TRIGGER_SELECTOR = '.ng-trigger';\nexport const NG_ANIMATING_CLASSNAME = 'ng-animating';\nexport const NG_ANIMATING_SELECTOR = '.ng-animating';\n\nexport function resolveTimingValue(value: string|number) {\n  if (typeof value == 'number') return value;\n\n  const matches = value.match(/^(-?[\\.\\d]+)(m?s)/);\n  if (!matches || matches.length < 2) return 0;\n\n  return _convertTimeValueToMS(parseFloat(matches[1]), matches[2]);\n}\n\nfunction _convertTimeValueToMS(value: number, unit: string): number {\n  switch (unit) {\n    case 's':\n      return value * ONE_SECOND;\n    default:  // ms or something else\n      return value;\n  }\n}\n\nexport function resolveTiming(\n    timings: string|number|AnimateTimings, errors: any[], allowNegativeValues?: boolean) {\n  return timings.hasOwnProperty('duration') ?\n      <AnimateTimings>timings :\n      parseTimeExpression(<string|number>timings, errors, allowNegativeValues);\n}\n\nfunction parseTimeExpression(\n    exp: string|number, errors: string[], allowNegativeValues?: boolean): AnimateTimings {\n  const regex = /^(-?[\\.\\d]+)(m?s)(?:\\s+(-?[\\.\\d]+)(m?s))?(?:\\s+([-a-z]+(?:\\(.+?\\))?))?$/i;\n  let duration: number;\n  let delay: number = 0;\n  let easing: string = '';\n  if (typeof exp === 'string') {\n    const matches = exp.match(regex);\n    if (matches === null) {\n      errors.push(`The provided timing value \"${exp}\" is invalid.`);\n      return {duration: 0, delay: 0, easing: ''};\n    }\n\n    duration = _convertTimeValueToMS(parseFloat(matches[1]), matches[2]);\n\n    const delayMatch = matches[3];\n    if (delayMatch != null) {\n      delay = _convertTimeValueToMS(parseFloat(delayMatch), matches[4]);\n    }\n\n    const easingVal = matches[5];\n    if (easingVal) {\n      easing = easingVal;\n    }\n  } else {\n    duration = exp;\n  }\n\n  if (!allowNegativeValues) {\n    let containsErrors = false;\n    let startIndex = errors.length;\n    if (duration < 0) {\n      errors.push(`Duration values below 0 are not allowed for this animation step.`);\n      containsErrors = true;\n    }\n    if (delay < 0) {\n      errors.push(`Delay values below 0 are not allowed for this animation step.`);\n      containsErrors = true;\n    }\n    if (containsErrors) {\n      errors.splice(startIndex, 0, `The provided timing value \"${exp}\" is invalid.`);\n    }\n  }\n\n  return {duration, delay, easing};\n}\n\nexport function copyObj(\n    obj: {[key: string]: any}, destination: {[key: string]: any} = {}): {[key: string]: any} {\n  Object.keys(obj).forEach(prop => {\n    destination[prop] = obj[prop];\n  });\n  return destination;\n}\n\nexport function normalizeStyles(styles: ɵStyleData|ɵStyleData[]): ɵStyleData {\n  const normalizedStyles: ɵStyleData = {};\n  if (Array.isArray(styles)) {\n    styles.forEach(data => copyStyles(data, false, normalizedStyles));\n  } else {\n    copyStyles(styles, false, normalizedStyles);\n  }\n  return normalizedStyles;\n}\n\nexport function copyStyles(\n    styles: ɵStyleData, readPrototype: boolean, destination: ɵStyleData = {}): ɵStyleData {\n  if (readPrototype) {\n    // we make use of a for-in loop so that the\n    // prototypically inherited properties are\n    // revealed from the backFill map\n    for (let prop in styles) {\n      destination[prop] = styles[prop];\n    }\n  } else {\n    copyObj(styles, destination);\n  }\n  return destination;\n}\n\nfunction getStyleAttributeString(element: any, key: string, value: string) {\n  // Return the key-value pair string to be added to the style attribute for the\n  // given CSS style key.\n  if (value) {\n    return key + ':' + value + ';';\n  } else {\n    return '';\n  }\n}\n\nfunction writeStyleAttribute(element: any) {\n  // Read the style property of the element and manually reflect it to the\n  // style attribute. This is needed because Domino on platform-server doesn't\n  // understand the full set of allowed CSS properties and doesn't reflect some\n  // of them automatically.\n  let styleAttrValue = '';\n  for (let i = 0; i < element.style.length; i++) {\n    const key = element.style.item(i);\n    styleAttrValue += getStyleAttributeString(element, key, element.style.getPropertyValue(key));\n  }\n  for (const key in element.style) {\n    // Skip internal Domino properties that don't need to be reflected.\n    if (!element.style.hasOwnProperty(key) || key.startsWith('_')) {\n      continue;\n    }\n    const dashKey = camelCaseToDashCase(key);\n    styleAttrValue += getStyleAttributeString(element, dashKey, element.style[key]);\n  }\n  element.setAttribute('style', styleAttrValue);\n}\n\nexport function setStyles(element: any, styles: ɵStyleData, formerStyles?: {[key: string]: any}) {\n  if (element['style']) {\n    Object.keys(styles).forEach(prop => {\n      const camelProp = dashCaseToCamelCase(prop);\n      if (formerStyles && !formerStyles.hasOwnProperty(prop)) {\n        formerStyles[prop] = element.style[camelProp];\n      }\n      element.style[camelProp] = styles[prop];\n    });\n    // On the server set the 'style' attribute since it's not automatically reflected.\n    if (isNode()) {\n      writeStyleAttribute(element);\n    }\n  }\n}\n\nexport function eraseStyles(element: any, styles: ɵStyleData) {\n  if (element['style']) {\n    Object.keys(styles).forEach(prop => {\n      const camelProp = dashCaseToCamelCase(prop);\n      element.style[camelProp] = '';\n    });\n    // On the server set the 'style' attribute since it's not automatically reflected.\n    if (isNode()) {\n      writeStyleAttribute(element);\n    }\n  }\n}\n\nexport function normalizeAnimationEntry(steps: AnimationMetadata|\n                                        AnimationMetadata[]): AnimationMetadata {\n  if (Array.isArray(steps)) {\n    if (steps.length == 1) return steps[0];\n    return sequence(steps);\n  }\n  return steps as AnimationMetadata;\n}\n\nexport function validateStyleParams(\n    value: string|number, options: AnimationOptions, errors: any[]) {\n  const params = options.params || {};\n  const matches = extractStyleParams(value);\n  if (matches.length) {\n    matches.forEach(varName => {\n      if (!params.hasOwnProperty(varName)) {\n        errors.push(\n            `Unable to resolve the local animation param ${varName} in the given list of values`);\n      }\n    });\n  }\n}\n\nconst PARAM_REGEX =\n    new RegExp(`${SUBSTITUTION_EXPR_START}\\\\s*(.+?)\\\\s*${SUBSTITUTION_EXPR_END}`, 'g');\nexport function extractStyleParams(value: string|number): string[] {\n  let params: string[] = [];\n  if (typeof value === 'string') {\n    let match: any;\n    while (match = PARAM_REGEX.exec(value)) {\n      params.push(match[1] as string);\n    }\n    PARAM_REGEX.lastIndex = 0;\n  }\n  return params;\n}\n\nexport function interpolateParams(\n    value: string|number, params: {[name: string]: any}, errors: any[]): string|number {\n  const original = value.toString();\n  const str = original.replace(PARAM_REGEX, (_, varName) => {\n    let localVal = params[varName];\n    // this means that the value was never overridden by the data passed in by the user\n    if (!params.hasOwnProperty(varName)) {\n      errors.push(`Please provide a value for the animation param ${varName}`);\n      localVal = '';\n    }\n    return localVal.toString();\n  });\n\n  // we do this to assert that numeric values stay as they are\n  return str == original ? value : str;\n}\n\nexport function iteratorToArray(iterator: any): any[] {\n  const arr: any[] = [];\n  let item = iterator.next();\n  while (!item.done) {\n    arr.push(item.value);\n    item = iterator.next();\n  }\n  return arr;\n}\n\nexport function mergeAnimationOptions(\n    source: AnimationOptions, destination: AnimationOptions): AnimationOptions {\n  if (source.params) {\n    const p0 = source.params;\n    if (!destination.params) {\n      destination.params = {};\n    }\n    const p1 = destination.params;\n    Object.keys(p0).forEach(param => {\n      if (!p1.hasOwnProperty(param)) {\n        p1[param] = p0[param];\n      }\n    });\n  }\n  return destination;\n}\n\nconst DASH_CASE_REGEXP = /-+([a-z0-9])/g;\nexport function dashCaseToCamelCase(input: string): string {\n  return input.replace(DASH_CASE_REGEXP, (...m: any[]) => m[1].toUpperCase());\n}\n\nfunction camelCaseToDashCase(input: string): string {\n  return input.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();\n}\n\nexport function allowPreviousPlayerStylesMerge(duration: number, delay: number) {\n  return duration === 0 || delay === 0;\n}\n\nexport function balancePreviousStylesIntoKeyframes(\n    element: any, keyframes: {[key: string]: any}[], previousStyles: {[key: string]: any}) {\n  const previousStyleProps = Object.keys(previousStyles);\n  if (previousStyleProps.length && keyframes.length) {\n    let startingKeyframe = keyframes[0];\n    let missingStyleProps: string[] = [];\n    previousStyleProps.forEach(prop => {\n      if (!startingKeyframe.hasOwnProperty(prop)) {\n        missingStyleProps.push(prop);\n      }\n      startingKeyframe[prop] = previousStyles[prop];\n    });\n\n    if (missingStyleProps.length) {\n      // tslint:disable-next-line\n      for (var i = 1; i < keyframes.length; i++) {\n        let kf = keyframes[i];\n        missingStyleProps.forEach(function(prop) {\n          kf[prop] = computeStyle(element, prop);\n        });\n      }\n    }\n  }\n  return keyframes;\n}\n\nexport function visitDslNode(\n    visitor: AnimationDslVisitor, node: AnimationMetadata, context: any): any;\nexport function visitDslNode(\n    visitor: AnimationAstVisitor, node: AnimationAst<AnimationMetadataType>, context: any): any;\nexport function visitDslNode(visitor: any, node: any, context: any): any {\n  switch (node.type) {\n    case AnimationMetadataType.Trigger:\n      return visitor.visitTrigger(node, context);\n    case AnimationMetadataType.State:\n      return visitor.visitState(node, context);\n    case AnimationMetadataType.Transition:\n      return visitor.visitTransition(node, context);\n    case AnimationMetadataType.Sequence:\n      return visitor.visitSequence(node, context);\n    case AnimationMetadataType.Group:\n      return visitor.visitGroup(node, context);\n    case AnimationMetadataType.Animate:\n      return visitor.visitAnimate(node, context);\n    case AnimationMetadataType.Keyframes:\n      return visitor.visitKeyframes(node, context);\n    case AnimationMetadataType.Style:\n      return visitor.visitStyle(node, context);\n    case AnimationMetadataType.Reference:\n      return visitor.visitReference(node, context);\n    case AnimationMetadataType.AnimateChild:\n      return visitor.visitAnimateChild(node, context);\n    case AnimationMetadataType.AnimateRef:\n      return visitor.visitAnimateRef(node, context);\n    case AnimationMetadataType.Query:\n      return visitor.visitQuery(node, context);\n    case AnimationMetadataType.Stagger:\n      return visitor.visitStagger(node, context);\n    default:\n      throw new Error(`Unable to resolve animation metadata node #${node.type}`);\n  }\n}\n\nexport function computeStyle(element: any, prop: string): string {\n  return (<any>window.getComputedStyle(element))[prop];\n}\n"]}