angular2
Version:
Angular 2 - a web framework for modern web apps
105 lines • 15.5 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
import { DOM } from 'angular2/src/platform/dom/dom_adapter';
import { isPresent, StringWrapper } from 'angular2/src/facade/lang';
import { StringMapWrapper, ListWrapper } from 'angular2/src/facade/collection';
import { EventManagerPlugin } from './event_manager';
import { Injectable } from 'angular2/src/core/di';
var modifierKeys = ['alt', 'control', 'meta', 'shift'];
var modifierKeyGetters = {
'alt': (event) => event.altKey,
'control': (event) => event.ctrlKey,
'meta': (event) => event.metaKey,
'shift': (event) => event.shiftKey
};
export let KeyEventsPlugin = class extends EventManagerPlugin {
constructor() {
super();
}
supports(eventName) {
return isPresent(KeyEventsPlugin.parseEventName(eventName));
}
addEventListener(element, eventName, handler) {
var parsedEvent = KeyEventsPlugin.parseEventName(eventName);
var outsideHandler = KeyEventsPlugin.eventCallback(element, StringMapWrapper.get(parsedEvent, 'fullKey'), handler, this.manager.getZone());
return this.manager.getZone().runOutsideAngular(() => {
return DOM.onAndCancel(element, StringMapWrapper.get(parsedEvent, 'domEventName'), outsideHandler);
});
}
static parseEventName(eventName) {
var parts = eventName.toLowerCase().split('.');
var domEventName = parts.shift();
if ((parts.length === 0) ||
!(StringWrapper.equals(domEventName, 'keydown') ||
StringWrapper.equals(domEventName, 'keyup'))) {
return null;
}
var key = KeyEventsPlugin._normalizeKey(parts.pop());
var fullKey = '';
modifierKeys.forEach(modifierName => {
if (ListWrapper.contains(parts, modifierName)) {
ListWrapper.remove(parts, modifierName);
fullKey += modifierName + '.';
}
});
fullKey += key;
if (parts.length != 0 || key.length === 0) {
// returning null instead of throwing to let another plugin process the event
return null;
}
var result = StringMapWrapper.create();
StringMapWrapper.set(result, 'domEventName', domEventName);
StringMapWrapper.set(result, 'fullKey', fullKey);
return result;
}
static getEventFullKey(event) {
var fullKey = '';
var key = DOM.getEventKey(event);
key = key.toLowerCase();
if (StringWrapper.equals(key, ' ')) {
key = 'space'; // for readability
}
else if (StringWrapper.equals(key, '.')) {
key = 'dot'; // because '.' is used as a separator in event names
}
modifierKeys.forEach(modifierName => {
if (modifierName != key) {
var modifierGetter = StringMapWrapper.get(modifierKeyGetters, modifierName);
if (modifierGetter(event)) {
fullKey += modifierName + '.';
}
}
});
fullKey += key;
return fullKey;
}
static eventCallback(element, fullKey, handler, zone) {
return (event) => {
if (StringWrapper.equals(KeyEventsPlugin.getEventFullKey(event), fullKey)) {
zone.run(() => handler(event));
}
};
}
/** @internal */
static _normalizeKey(keyName) {
// TODO: switch to a StringMap if the mapping grows too much
switch (keyName) {
case 'esc':
return 'escape';
default:
return keyName;
}
}
};
KeyEventsPlugin = __decorate([
Injectable(),
__metadata('design:paramtypes', [])
], KeyEventsPlugin);
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{DOM} from 'angular2/src/platform/dom/dom_adapter';\nimport {\n  isPresent,\n  isBlank,\n  StringWrapper,\n  RegExpWrapper,\n  NumberWrapper\n} from 'angular2/src/facade/lang';\nimport {StringMapWrapper, ListWrapper} from 'angular2/src/facade/collection';\nimport {EventManagerPlugin} from './event_manager';\nimport {NgZone} from 'angular2/src/core/zone/ng_zone';\nimport {Injectable} from 'angular2/src/core/di';\n\nvar modifierKeys = ['alt', 'control', 'meta', 'shift'];\nvar modifierKeyGetters: {[key: string]: (event: KeyboardEvent) => boolean} = {\n  'alt': (event: KeyboardEvent) => event.altKey,\n  'control': (event: KeyboardEvent) => event.ctrlKey,\n  'meta': (event: KeyboardEvent) => event.metaKey,\n  'shift': (event: KeyboardEvent) => event.shiftKey\n};\n\n@Injectable()\nexport class KeyEventsPlugin extends EventManagerPlugin {\n  constructor() { super(); }\n\n  supports(eventName: string): boolean {\n    return isPresent(KeyEventsPlugin.parseEventName(eventName));\n  }\n\n  addEventListener(element: HTMLElement, eventName: string, handler: Function): Function {\n    var parsedEvent = KeyEventsPlugin.parseEventName(eventName);\n\n    var outsideHandler = KeyEventsPlugin.eventCallback(\n        element, StringMapWrapper.get(parsedEvent, 'fullKey'), handler, this.manager.getZone());\n\n    return this.manager.getZone().runOutsideAngular(() => {\n      return DOM.onAndCancel(element, StringMapWrapper.get(parsedEvent, 'domEventName'),\n                             outsideHandler);\n    });\n  }\n\n  static parseEventName(eventName: string): {[key: string]: string} {\n    var parts: string[] = eventName.toLowerCase().split('.');\n\n    var domEventName = parts.shift();\n    if ((parts.length === 0) ||\n        !(StringWrapper.equals(domEventName, 'keydown') ||\n          StringWrapper.equals(domEventName, 'keyup'))) {\n      return null;\n    }\n\n    var key = KeyEventsPlugin._normalizeKey(parts.pop());\n\n    var fullKey = '';\n    modifierKeys.forEach(modifierName => {\n      if (ListWrapper.contains(parts, modifierName)) {\n        ListWrapper.remove(parts, modifierName);\n        fullKey += modifierName + '.';\n      }\n    });\n    fullKey += key;\n\n    if (parts.length != 0 || key.length === 0) {\n      // returning null instead of throwing to let another plugin process the event\n      return null;\n    }\n    var result = StringMapWrapper.create();\n    StringMapWrapper.set(result, 'domEventName', domEventName);\n    StringMapWrapper.set(result, 'fullKey', fullKey);\n    return result;\n  }\n\n  static getEventFullKey(event: KeyboardEvent): string {\n    var fullKey = '';\n    var key = DOM.getEventKey(event);\n    key = key.toLowerCase();\n    if (StringWrapper.equals(key, ' ')) {\n      key = 'space';  // for readability\n    } else if (StringWrapper.equals(key, '.')) {\n      key = 'dot';  // because '.' is used as a separator in event names\n    }\n    modifierKeys.forEach(modifierName => {\n      if (modifierName != key) {\n        var modifierGetter = StringMapWrapper.get(modifierKeyGetters, modifierName);\n        if (modifierGetter(event)) {\n          fullKey += modifierName + '.';\n        }\n      }\n    });\n    fullKey += key;\n    return fullKey;\n  }\n\n  static eventCallback(element: HTMLElement, fullKey: any, handler: Function,\n                       zone: NgZone): Function {\n    return (event) => {\n      if (StringWrapper.equals(KeyEventsPlugin.getEventFullKey(event), fullKey)) {\n        zone.run(() => handler(event));\n      }\n    };\n  }\n\n  /** @internal */\n  static _normalizeKey(keyName: string): string {\n    // TODO: switch to a StringMap if the mapping grows too much\n    switch (keyName) {\n      case 'esc':\n        return 'escape';\n      default:\n        return keyName;\n    }\n  }\n}\n"]}