add main window; webview; webchannel; pdf.js; wip sidebar

controller.js

@@ -0,0 +1,40 @@
+
+const h = (name, props = {}, ...children) => {
+    const element = document.createElement(name);
+
+    for (const [key, value] of Object.entries(props))
+        key.startsWith('on')
+            ? element.addEventListener(key.substring(2), value)
+            : element.setAttribute(key, value);
+
+    for (const child of children)
+        element.appendChild(
+            typeof(child) === 'string'
+                ? document.createTextNode(child)
+                : child);
+
+    return element;
+};
+
+const qs = s => document.querySelector(s);
+const qsa = s => Array.from(document.querySelectorAll(s))
+
+const on_command = command => {
+    switch(command.type) {
+    case 'alert': alert(command.message); break;
+    case 'load_pdf': pdfjsLib.getDocument(command.url).promise.then(pdf => PDFViewerApplication.load(pdf)); break;
+    }
+};
+
+let call_python;
+
+new QWebChannel(qt.webChannelTransport, channel => {
+    call_python = (argument, callback) =>
+        channel.objects.bridge.call_python(JSON.stringify(argument),
+            result => callback && callback(JSON.parse(result)));
+
+    channel.objects.bridge.call_javascript.connect(
+        result => on_command(JSON.parse(result)));
+
+    call_python({'type': 'ready'});
+});