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import * as followControllerActions from '../../actions/follow-controller';
import * as messages from '../../../shared/messages';
import MessageListener, { WebMessageSender } from '../../MessageListener';
import HintKeyProducer from '../../hint-key-producer';
import { SettingRepositoryImpl } from '../../repositories/SettingRepository';
let settingRepository = new SettingRepositoryImpl();
const broadcastMessage = (win: Window, message: messages.Message): void => {
let json = JSON.stringify(message);
let frames = [win.self].concat(Array.from(win.frames as any));
frames.forEach(frame => frame.postMessage(json, '*'));
};
export default class FollowController {
private win: Window;
private store: any;
private state: {
enabled?: boolean;
newTab?: boolean;
background?: boolean;
keys?: string,
};
private keys: string[];
private producer: HintKeyProducer | null;
constructor(win: Window, store: any) {
this.win = win;
this.store = store;
this.state = {};
this.keys = [];
this.producer = null;
new MessageListener().onWebMessage(this.onMessage.bind(this));
store.subscribe(() => {
this.update();
});
}
onMessage(message: messages.Message, sender: WebMessageSender) {
switch (message.type) {
case messages.FOLLOW_START:
return this.store.dispatch(
followControllerActions.enable(message.newTab, message.background));
case messages.FOLLOW_RESPONSE_COUNT_TARGETS:
return this.create(message.count, sender);
case messages.FOLLOW_KEY_PRESS:
return this.keyPress(message.key, message.ctrlKey);
}
}
update(): void {
let prevState = this.state;
this.state = this.store.getState().followController;
if (!prevState.enabled && this.state.enabled) {
this.count();
} else if (prevState.enabled && !this.state.enabled) {
this.remove();
} else if (prevState.keys !== this.state.keys) {
this.updateHints();
}
}
updateHints(): void {
let shown = this.keys.filter((key) => {
return key.startsWith(this.state.keys as string);
});
if (shown.length === 1) {
this.activate();
this.store.dispatch(followControllerActions.disable());
}
broadcastMessage(this.win, {
type: messages.FOLLOW_SHOW_HINTS,
keys: this.state.keys as string,
});
}
activate(): void {
broadcastMessage(this.win, {
type: messages.FOLLOW_ACTIVATE,
keys: this.state.keys as string,
});
}
keyPress(key: string, ctrlKey: boolean): boolean {
if (key === '[' && ctrlKey) {
this.store.dispatch(followControllerActions.disable());
return true;
}
switch (key) {
case 'Enter':
this.activate();
this.store.dispatch(followControllerActions.disable());
break;
case 'Esc':
this.store.dispatch(followControllerActions.disable());
break;
case 'Backspace':
case 'Delete':
this.store.dispatch(followControllerActions.backspace());
break;
default:
if (this.hintchars().includes(key)) {
this.store.dispatch(followControllerActions.keyPress(key));
}
break;
}
return true;
}
count() {
this.producer = new HintKeyProducer(this.hintchars());
let doc = this.win.document;
let viewWidth = this.win.innerWidth || doc.documentElement.clientWidth;
let viewHeight = this.win.innerHeight || doc.documentElement.clientHeight;
let frameElements = this.win.document.querySelectorAll('frame,iframe');
this.win.postMessage(JSON.stringify({
type: messages.FOLLOW_REQUEST_COUNT_TARGETS,
viewSize: { width: viewWidth, height: viewHeight },
framePosition: { x: 0, y: 0 },
}), '*');
frameElements.forEach((ele) => {
let { left: frameX, top: frameY } = ele.getBoundingClientRect();
let message = JSON.stringify({
type: messages.FOLLOW_REQUEST_COUNT_TARGETS,
viewSize: { width: viewWidth, height: viewHeight },
framePosition: { x: frameX, y: frameY },
});
if (ele instanceof HTMLFrameElement && ele.contentWindow ||
ele instanceof HTMLIFrameElement && ele.contentWindow) {
ele.contentWindow.postMessage(message, '*');
}
});
}
create(count: number, sender: WebMessageSender) {
let produced = [];
for (let i = 0; i < count; ++i) {
produced.push((this.producer as HintKeyProducer).produce());
}
this.keys = this.keys.concat(produced);
(sender as Window).postMessage(JSON.stringify({
type: messages.FOLLOW_CREATE_HINTS,
keysArray: produced,
newTab: this.state.newTab,
background: this.state.background,
}), '*');
}
remove() {
this.keys = [];
broadcastMessage(this.win, {
type: messages.FOLLOW_REMOVE_HINTS,
});
}
private hintchars() {
return settingRepository.get().properties.hintchars;
}
}
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