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Code Issues Releases Activity

Desktop: Render note using iframe instead of deprecated webview

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This commit is contained in:
Laurent Cozic 2019-12-17 00:45:27 +00:00
parent b44ecc1958
commit f10695fb8f
1 changed files with 51 additions and 21 deletions
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72
ElectronClient/app/gui/NoteTextViewer.jsx
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@ -5,6 +5,10 @@ class NoteTextViewerComponent extends React.Component {
constructor() {
super();
this.state = {
'html': '',
};
this.initialized_ = false;
this.domReady_ = false;
@ -13,6 +17,8 @@ class NoteTextViewerComponent extends React.Component {
this.webview_domReady = this.webview_domReady.bind(this);
this.webview_ipcMessage = this.webview_ipcMessage.bind(this);
this.webview_load = this.webview_load.bind(this);
this.webview_message = this.webview_message.bind(this);
}
webview_domReady(event) {
@ -24,6 +30,22 @@ class NoteTextViewerComponent extends React.Component {
if (this.props.onIpcMessage) this.props.onIpcMessage(event);
}
webview_load() {
this.webview_domReady();
}
webview_message(event) {
if (!event.data || event.data.target !== 'main') return;
const callName = event.data.name;
const args = event.data.args;
if (this.props.onIpcMessage) this.props.onIpcMessage({
channel: callName,
args: args,
});
}
domReady() {
return this.domReady_;
}
@ -35,6 +57,7 @@ class NoteTextViewerComponent extends React.Component {
this.webviewListeners_ = {
'dom-ready': this.webview_domReady.bind(this),
'ipc-message': this.webview_ipcMessage.bind(this),
'load': this.webview_load.bind(this),
};
}
@ -44,19 +67,7 @@ class NoteTextViewerComponent extends React.Component {
wv.addEventListener(n, fn);
}
let isAlreadyReady = false;
try {
isAlreadyReady = !this.webviewRef_.current.isLoading();
} catch (error) {
// Ignore - it means the view has not started loading, and the DOM ready event has not been emitted yet
// Error is "The WebView must be attached to the DOM and the dom-ready event emitted before this method can be called."
}
// Edge-case - the webview was already ready by the time initWebview was
// called - so manually call the domReady event to notify caller.
if (isAlreadyReady) {
this.webview_domReady({});
}
this.webviewRef_.current.contentWindow.addEventListener('message', this.webview_message);
}
destroyWebview() {
@ -69,6 +80,8 @@ class NoteTextViewerComponent extends React.Component {
wv.removeEventListener(n, fn);
}
this.webviewRef_.current.contentWindow.removeEventListener('message', this.webview_message);
this.initialized_ = false;
this.domReady_ = false;
}
@ -96,16 +109,32 @@ class NoteTextViewerComponent extends React.Component {
// Wrap WebView functions
// ----------------------------------------------------------------
send(channel, arg0 = null, arg1 = null, arg2 = null, arg3 = null) {
return this.webviewRef_.current.send(channel, arg0, arg1, arg2, arg3);
send(channel, arg0 = null, arg1 = null) {
const win = this.webviewRef_.current.contentWindow;
if (channel === 'setHtml') {
win.postMessage({ target: 'webview', name: 'setHtml', data: { html: arg0, options: arg1 } }, '*');
}
if (channel === 'scrollToHash') {
win.postMessage({ target: 'webview', name: 'scrollToHash', data: { hash: arg0 } }, '*');
}
if (channel === 'setPercentScroll') {
win.postMessage({ target: 'webview', name: 'setPercentScroll', data: { percent: arg0 } }, '*');
}
if (channel === 'setMarkers') {
win.postMessage({ target: 'webview', name: 'setMarkers', data: { keywords: arg0, options: arg1 } }, '*');
}
}
printToPDF(options, callback) {
printToPDF() { // options, callback) {
// In Electron 4x, printToPDF is broken so need to use this hack:
// https://github.com/electron/electron/issues/16171#issuecomment-451090245
// return this.webviewRef_.current.printToPDF(options, callback);
return this.webviewRef_.current.getWebContents().printToPDF(options, callback);
// return this.webviewRef_.current.getWebContents().printToPDF(options, callback);
}
print() {
@ -119,15 +148,15 @@ class NoteTextViewerComponent extends React.Component {
}
openDevTools() {
return this.webviewRef_.current.openDevTools();
// return this.webviewRef_.current.openDevTools();
}
closeDevTools() {
return this.webviewRef_.current.closeDevTools();
// return this.webviewRef_.current.closeDevTools();
}
isDevToolsOpened() {
return this.webviewRef_.current.isDevToolsOpened();
// return this.webviewRef_.current.isDevToolsOpened();
}
// ----------------------------------------------------------------
@ -135,7 +164,8 @@ class NoteTextViewerComponent extends React.Component {
// ----------------------------------------------------------------
render() {
return <webview ref={this.webviewRef_} style={this.props.viewerStyle} preload="gui/note-viewer/preload.js" src="gui/note-viewer/index.html" webpreferences="contextIsolation" />;
const viewerStyle = Object.assign({}, this.props.viewerStyle, { borderTop: 'none' });
return <iframe className="noteTextViewer" ref={this.webviewRef_} style={viewerStyle} src="gui/note-viewer/index.html"></iframe>;
}
}