48df8725d8
Failure of loading drawings will now close the drawing view and show an error message, hinting at file or permission issues, instead of leaving the user facing a continuosly loading interface. Adds test to cover. This also updates errors from our HTTP service to be wrapped in a custom error type for better identification and so the error is an actual javascript error. Should be object compatible. Related to #3955.
110 lines
No EOL
3.1 KiB
JavaScript
110 lines
No EOL
3.1 KiB
JavaScript
let iFrame = null;
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let lastApprovedOrigin;
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let onInit, onSave;
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/**
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* Show the draw.io editor.
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* @param {String} drawioUrl
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* @param {Function} onInitCallback - Must return a promise with the xml to load for the editor.
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* @param {Function} onSaveCallback - Is called with the drawing data on save.
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*/
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function show(drawioUrl, onInitCallback, onSaveCallback) {
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onInit = onInitCallback;
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onSave = onSaveCallback;
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iFrame = document.createElement('iframe');
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iFrame.setAttribute('frameborder', '0');
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window.addEventListener('message', drawReceive);
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iFrame.setAttribute('src', drawioUrl);
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iFrame.setAttribute('class', 'fullscreen');
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iFrame.style.backgroundColor = '#FFFFFF';
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document.body.appendChild(iFrame);
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lastApprovedOrigin = (new URL(drawioUrl)).origin;
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}
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function close() {
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drawEventClose();
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}
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/**
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* Receive and handle a message event from the draw.io window.
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* @param {MessageEvent} event
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*/
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function drawReceive(event) {
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if (!event.data || event.data.length < 1) return;
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if (event.origin !== lastApprovedOrigin) return;
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const message = JSON.parse(event.data);
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if (message.event === 'init') {
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drawEventInit();
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} else if (message.event === 'exit') {
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drawEventClose();
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} else if (message.event === 'save') {
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drawEventSave(message);
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} else if (message.event === 'export') {
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drawEventExport(message);
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} else if (message.event === 'configure') {
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drawEventConfigure();
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}
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}
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function drawEventExport(message) {
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if (onSave) {
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onSave(message.data);
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}
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}
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function drawEventSave(message) {
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drawPostMessage({action: 'export', format: 'xmlpng', xml: message.xml, spin: 'Updating drawing'});
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}
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function drawEventInit() {
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if (!onInit) return;
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onInit().then(xml => {
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drawPostMessage({action: 'load', autosave: 1, xml: xml});
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});
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}
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function drawEventConfigure() {
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const config = {};
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window.$events.emitPublic(iFrame, 'editor-drawio::configure', {config});
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drawPostMessage({action: 'configure', config});
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}
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function drawEventClose() {
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window.removeEventListener('message', drawReceive);
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if (iFrame) document.body.removeChild(iFrame);
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}
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function drawPostMessage(data) {
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iFrame.contentWindow.postMessage(JSON.stringify(data), lastApprovedOrigin);
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}
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async function upload(imageData, pageUploadedToId) {
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let data = {
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image: imageData,
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uploaded_to: pageUploadedToId,
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};
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const resp = await window.$http.post(window.baseUrl(`/images/drawio`), data);
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return resp.data;
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}
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/**
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* Load an existing image, by fetching it as Base64 from the system.
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* @param drawingId
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* @returns {Promise<string>}
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*/
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async function load(drawingId) {
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try {
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const resp = await window.$http.get(window.baseUrl(`/images/drawio/base64/${drawingId}`));
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return `data:image/png;base64,${resp.data.content}`;
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} catch (error) {
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if (error instanceof window.$http.HttpError) {
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window.$events.showResponseError(error);
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}
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close();
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throw error;
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}
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}
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export default {show, close, upload, load}; |