angular2/src/core/linker/view_resolver.js

Angular 2 - a web framework for modern web apps

'use strict';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);
};
var di_1 = require('angular2/src/core/di');
var view_1 = require('../metadata/view');
var directives_1 = require('../metadata/directives');
var lang_1 = require('angular2/src/facade/lang');
var exceptions_1 = require('angular2/src/facade/exceptions');
var collection_1 = require('angular2/src/facade/collection');
var reflection_1 = require('angular2/src/core/reflection/reflection');
var ViewResolver = (function () {
    function ViewResolver() {
        /** @internal */
        this._cache = new collection_1.Map();
    }
    ViewResolver.prototype.resolve = function (component) {
        var view = this._cache.get(component);
        if (lang_1.isBlank(view)) {
            view = this._resolve(component);
            this._cache.set(component, view);
        }
        return view;
    };
    /** @internal */
    ViewResolver.prototype._resolve = function (component) {
        var compMeta;
        var viewMeta;
        reflection_1.reflector.annotations(component).forEach(function (m) {
            if (m instanceof view_1.ViewMetadata) {
                viewMeta = m;
            }
            if (m instanceof directives_1.ComponentMetadata) {
                compMeta = m;
            }
        });
        if (lang_1.isPresent(compMeta)) {
            if (lang_1.isBlank(compMeta.template) && lang_1.isBlank(compMeta.templateUrl) && lang_1.isBlank(viewMeta)) {
                throw new exceptions_1.BaseException("Component '" + lang_1.stringify(component) + "' must have either 'template', 'templateUrl', or '@View' set.");
            }
            else if (lang_1.isPresent(compMeta.template) && lang_1.isPresent(viewMeta)) {
                this._throwMixingViewAndComponent("template", component);
            }
            else if (lang_1.isPresent(compMeta.templateUrl) && lang_1.isPresent(viewMeta)) {
                this._throwMixingViewAndComponent("templateUrl", component);
            }
            else if (lang_1.isPresent(compMeta.directives) && lang_1.isPresent(viewMeta)) {
                this._throwMixingViewAndComponent("directives", component);
            }
            else if (lang_1.isPresent(compMeta.pipes) && lang_1.isPresent(viewMeta)) {
                this._throwMixingViewAndComponent("pipes", component);
            }
            else if (lang_1.isPresent(compMeta.encapsulation) && lang_1.isPresent(viewMeta)) {
                this._throwMixingViewAndComponent("encapsulation", component);
            }
            else if (lang_1.isPresent(compMeta.styles) && lang_1.isPresent(viewMeta)) {
                this._throwMixingViewAndComponent("styles", component);
            }
            else if (lang_1.isPresent(compMeta.styleUrls) && lang_1.isPresent(viewMeta)) {
                this._throwMixingViewAndComponent("styleUrls", component);
            }
            else if (lang_1.isPresent(viewMeta)) {
                return viewMeta;
            }
            else {
                return new view_1.ViewMetadata({
                    templateUrl: compMeta.templateUrl,
                    template: compMeta.template,
                    directives: compMeta.directives,
                    pipes: compMeta.pipes,
                    encapsulation: compMeta.encapsulation,
                    styles: compMeta.styles,
                    styleUrls: compMeta.styleUrls
                });
            }
        }
        else {
            if (lang_1.isBlank(viewMeta)) {
                throw new exceptions_1.BaseException("No View decorator found on component '" + lang_1.stringify(component) + "'");
            }
            else {
                return viewMeta;
            }
        }
        return null;
    };
    /** @internal */
    ViewResolver.prototype._throwMixingViewAndComponent = function (propertyName, component) {
        throw new exceptions_1.BaseException("Component '" + lang_1.stringify(component) + "' cannot have both '" + propertyName + "' and '@View' set at the same time\"");
    };
    ViewResolver = __decorate([
        di_1.Injectable(), 
        __metadata('design:paramtypes', [])
    ], ViewResolver);
    return ViewResolver;
})();
exports.ViewResolver = ViewResolver;
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