113 lines
3.5 KiB
JavaScript
113 lines
3.5 KiB
JavaScript
/*
|
|
* Copyright (C) 2020-2021 Yomichan Authors
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
class TemplateRendererFrameApi {
|
|
constructor(templateRenderer) {
|
|
this._templateRenderer = templateRenderer;
|
|
this._windowMessageHandlers = new Map([
|
|
['render', {async: false, handler: this._onRender.bind(this)}],
|
|
['renderMulti', {async: false, handler: this._onRenderMulti.bind(this)}],
|
|
['getModifiedData', {async: false, handler: this._onGetModifiedData.bind(this)}]
|
|
]);
|
|
}
|
|
|
|
prepare() {
|
|
window.addEventListener('message', this._onWindowMessage.bind(this), false);
|
|
this._postMessage(window.parent, 'ready', {}, null);
|
|
}
|
|
|
|
// Private
|
|
|
|
_onWindowMessage(e) {
|
|
const {source, data: {action, params, id}} = e;
|
|
const messageHandler = this._windowMessageHandlers.get(action);
|
|
if (typeof messageHandler === 'undefined') { return; }
|
|
|
|
this._onWindowMessageInner(messageHandler, action, params, source, id);
|
|
}
|
|
|
|
async _onWindowMessageInner({handler, async}, action, params, source, id) {
|
|
let response;
|
|
try {
|
|
let result = handler(params);
|
|
if (async) {
|
|
result = await result;
|
|
}
|
|
response = {result};
|
|
} catch (error) {
|
|
response = {error: this._serializeError(error)};
|
|
}
|
|
|
|
if (typeof id === 'undefined') { return; }
|
|
this._postMessage(source, `${action}.response`, response, id);
|
|
}
|
|
|
|
_onRender({template, data, type}) {
|
|
return this._templateRenderer.render(template, data, type);
|
|
}
|
|
|
|
_onRenderMulti({items}) {
|
|
return this._serializeMulti(this._templateRenderer.renderMulti(items));
|
|
}
|
|
|
|
_onGetModifiedData({data, type}) {
|
|
const result = this._templateRenderer.getModifiedData(data, type);
|
|
return this._clone(result);
|
|
}
|
|
|
|
_serializeError(error) {
|
|
try {
|
|
if (typeof error === 'object' && error !== null) {
|
|
const result = {
|
|
name: error.name,
|
|
message: error.message,
|
|
stack: error.stack
|
|
};
|
|
if (Object.prototype.hasOwnProperty.call(error, 'data')) {
|
|
result.data = error.data;
|
|
}
|
|
return result;
|
|
}
|
|
} catch (e) {
|
|
// NOP
|
|
}
|
|
return {
|
|
value: error,
|
|
hasValue: true
|
|
};
|
|
}
|
|
|
|
_serializeMulti(array) {
|
|
for (let i = 0, ii = array.length; i < ii; ++i) {
|
|
const value = array[i];
|
|
const {error} = value;
|
|
if (typeof error !== 'undefined') {
|
|
value.error = this._serializeError(error);
|
|
}
|
|
}
|
|
return array;
|
|
}
|
|
|
|
_clone(value) {
|
|
return JSON.parse(JSON.stringify(value));
|
|
}
|
|
|
|
_postMessage(target, action, params, id) {
|
|
return target.postMessage({action, params, id}, '*');
|
|
}
|
|
}
|