angular2
Version:
Angular 2 - a web framework for modern web apps
94 lines • 17.6 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") return Reflect.decorate(decorators, target, key, desc);
switch (arguments.length) {
case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);
case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);
case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);
}
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
import { SourceModule, SourceExpression, moduleRef } from './source_module';
import { ViewEncapsulation } from 'angular2/src/core/metadata/view';
import { XHR } from 'angular2/src/compiler/xhr';
import { IS_DART, isBlank } from 'angular2/src/facade/lang';
import { PromiseWrapper } from 'angular2/src/facade/async';
import { ShadowCss } from 'angular2/src/compiler/shadow_css';
import { UrlResolver } from 'angular2/src/compiler/url_resolver';
import { extractStyleUrls } from './style_url_resolver';
import { escapeSingleQuoteString, codeGenExportVariable, MODULE_SUFFIX } from './util';
import { Injectable } from 'angular2/src/core/di';
import { HOST_ATTR, CONTENT_ATTR } from 'angular2/src/core/render/view_factory';
export let StyleCompiler = class {
constructor(_xhr, _urlResolver) {
this._xhr = _xhr;
this._urlResolver = _urlResolver;
this._styleCache = new Map();
this._shadowCss = new ShadowCss();
}
compileComponentRuntime(template) {
var styles = template.styles;
var styleAbsUrls = template.styleUrls;
return this._loadStyles(styles, styleAbsUrls, template.encapsulation === ViewEncapsulation.Emulated);
}
compileComponentCodeGen(template) {
var shim = template.encapsulation === ViewEncapsulation.Emulated;
return this._styleCodeGen(template.styles, template.styleUrls, shim);
}
compileStylesheetCodeGen(stylesheetUrl, cssText) {
var styleWithImports = extractStyleUrls(this._urlResolver, stylesheetUrl, cssText);
return [
this._styleModule(stylesheetUrl, false, this._styleCodeGen([styleWithImports.style], styleWithImports.styleUrls, false)),
this._styleModule(stylesheetUrl, true, this._styleCodeGen([styleWithImports.style], styleWithImports.styleUrls, true))
];
}
clearCache() { this._styleCache.clear(); }
_loadStyles(plainStyles, absUrls, encapsulate) {
var promises = absUrls.map((absUrl) => {
var cacheKey = `${absUrl}${encapsulate ? '.shim' : ''}`;
var result = this._styleCache.get(cacheKey);
if (isBlank(result)) {
result = this._xhr.get(absUrl).then((style) => {
var styleWithImports = extractStyleUrls(this._urlResolver, absUrl, style);
return this._loadStyles([styleWithImports.style], styleWithImports.styleUrls, encapsulate);
});
this._styleCache.set(cacheKey, result);
}
return result;
});
return PromiseWrapper.all(promises).then((nestedStyles) => {
var result = plainStyles.map(plainStyle => this._shimIfNeeded(plainStyle, encapsulate));
nestedStyles.forEach(styles => result.push(styles));
return result;
});
}
_styleCodeGen(plainStyles, absUrls, shim) {
var arrayPrefix = IS_DART ? `const` : '';
var styleExpressions = plainStyles.map(plainStyle => escapeSingleQuoteString(this._shimIfNeeded(plainStyle, shim)));
for (var i = 0; i < absUrls.length; i++) {
var moduleUrl = this._createModuleUrl(absUrls[i], shim);
styleExpressions.push(`${moduleRef(moduleUrl)}STYLES`);
}
var expressionSource = `${arrayPrefix} [${styleExpressions.join(',')}]`;
return new SourceExpression([], expressionSource);
}
_styleModule(stylesheetUrl, shim, expression) {
var moduleSource = `
${expression.declarations.join('\n')}
${codeGenExportVariable('STYLES')}${expression.expression};
`;
return new SourceModule(this._createModuleUrl(stylesheetUrl, shim), moduleSource);
}
_shimIfNeeded(style, shim) {
return shim ? this._shadowCss.shimCssText(style, CONTENT_ATTR, HOST_ATTR) : style;
}
_createModuleUrl(stylesheetUrl, shim) {
return shim ? `${stylesheetUrl}.shim${MODULE_SUFFIX}` : `${stylesheetUrl}${MODULE_SUFFIX}`;
}
};
StyleCompiler = __decorate([
Injectable(),
__metadata('design:paramtypes', [XHR, UrlResolver])
], StyleCompiler);
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{CompileTypeMetadata, CompileTemplateMetadata} from './directive_metadata';\nimport {SourceModule, SourceExpression, moduleRef} from './source_module';\nimport {ViewEncapsulation} from 'angular2/src/core/metadata/view';\nimport {XHR} from 'angular2/src/compiler/xhr';\nimport {IS_DART, StringWrapper, isBlank} from 'angular2/src/facade/lang';\nimport {PromiseWrapper, Promise} from 'angular2/src/facade/async';\nimport {ShadowCss} from 'angular2/src/compiler/shadow_css';\nimport {UrlResolver} from 'angular2/src/compiler/url_resolver';\nimport {extractStyleUrls} from './style_url_resolver';\nimport {\n  escapeSingleQuoteString,\n  codeGenExportVariable,\n  codeGenToString,\n  MODULE_SUFFIX\n} from './util';\nimport {Injectable} from 'angular2/src/core/di';\nimport {COMPONENT_VARIABLE, HOST_ATTR, CONTENT_ATTR} from 'angular2/src/core/render/view_factory';\n\n@Injectable()\nexport class StyleCompiler {\n  private _styleCache: Map<string, Promise<string[]>> = new Map<string, Promise<string[]>>();\n  private _shadowCss: ShadowCss = new ShadowCss();\n\n  constructor(private _xhr: XHR, private _urlResolver: UrlResolver) {}\n\n  compileComponentRuntime(template: CompileTemplateMetadata): Promise<Array<string | any[]>> {\n    var styles = template.styles;\n    var styleAbsUrls = template.styleUrls;\n    return this._loadStyles(styles, styleAbsUrls,\n                            template.encapsulation === ViewEncapsulation.Emulated);\n  }\n\n  compileComponentCodeGen(template: CompileTemplateMetadata): SourceExpression {\n    var shim = template.encapsulation === ViewEncapsulation.Emulated;\n    return this._styleCodeGen(template.styles, template.styleUrls, shim);\n  }\n\n  compileStylesheetCodeGen(stylesheetUrl: string, cssText: string): SourceModule[] {\n    var styleWithImports = extractStyleUrls(this._urlResolver, stylesheetUrl, cssText);\n    return [\n      this._styleModule(\n          stylesheetUrl, false,\n          this._styleCodeGen([styleWithImports.style], styleWithImports.styleUrls, false)),\n      this._styleModule(stylesheetUrl, true, this._styleCodeGen([styleWithImports.style],\n                                                                styleWithImports.styleUrls, true))\n    ];\n  }\n\n  clearCache() { this._styleCache.clear(); }\n\n  private _loadStyles(plainStyles: string[], absUrls: string[],\n                      encapsulate: boolean): Promise<Array<string | any[]>> {\n    var promises = absUrls.map((absUrl) => {\n      var cacheKey = `${absUrl}${encapsulate ? '.shim' : ''}`;\n      var result = this._styleCache.get(cacheKey);\n      if (isBlank(result)) {\n        result = this._xhr.get(absUrl).then((style) => {\n          var styleWithImports = extractStyleUrls(this._urlResolver, absUrl, style);\n          return this._loadStyles([styleWithImports.style], styleWithImports.styleUrls,\n                                  encapsulate);\n        });\n        this._styleCache.set(cacheKey, result);\n      }\n      return result;\n    });\n    return PromiseWrapper.all(promises).then((nestedStyles: string[][]) => {\n      var result: Array<string | any[]> =\n          plainStyles.map(plainStyle => this._shimIfNeeded(plainStyle, encapsulate));\n      nestedStyles.forEach(styles => result.push(styles));\n      return result;\n    });\n  }\n\n  private _styleCodeGen(plainStyles: string[], absUrls: string[], shim: boolean): SourceExpression {\n    var arrayPrefix = IS_DART ? `const` : '';\n    var styleExpressions = plainStyles.map(\n        plainStyle => escapeSingleQuoteString(this._shimIfNeeded(plainStyle, shim)));\n\n    for (var i = 0; i < absUrls.length; i++) {\n      var moduleUrl = this._createModuleUrl(absUrls[i], shim);\n      styleExpressions.push(`${moduleRef(moduleUrl)}STYLES`);\n    }\n    var expressionSource = `${arrayPrefix} [${styleExpressions.join(',')}]`;\n    return new SourceExpression([], expressionSource);\n  }\n\n  private _styleModule(stylesheetUrl: string, shim: boolean,\n                       expression: SourceExpression): SourceModule {\n    var moduleSource = `\n      ${expression.declarations.join('\\n')}\n      ${codeGenExportVariable('STYLES')}${expression.expression};\n    `;\n    return new SourceModule(this._createModuleUrl(stylesheetUrl, shim), moduleSource);\n  }\n\n  private _shimIfNeeded(style: string, shim: boolean): string {\n    return shim ? this._shadowCss.shimCssText(style, CONTENT_ATTR, HOST_ATTR) : style;\n  }\n\n  private _createModuleUrl(stylesheetUrl: string, shim: boolean): string {\n    return shim ? `${stylesheetUrl}.shim${MODULE_SUFFIX}` : `${stylesheetUrl}${MODULE_SUFFIX}`;\n  }\n}\n"]}