[rbrowser] show warning dialog when dblclick processing takes longer

In this time server will not react on any other user actions,
therefore just block UI with modal message

gui/browserv7/src/RBrowser.cxx

@@ -533,8 +533,10 @@ void RBrowser::ProcessMsg(unsigned connid, const std::string &arg0)
       if (arr && (arr->size() > 2))
          reply = ProcessDblClick(*arr);
 
-      if (!reply.empty())
-         fWebWindow->Send(connid, reply);
+      if (reply.empty())
+         reply = "NOPE";
+
+      fWebWindow->Send(connid, reply);
 
    } else if (kind == "WIDGET_SELECTED") {
       fActiveWidgetName = msg;

ui5/browser/controller/Browser.controller.js

@@ -14,6 +14,10 @@ sap.ui.define(['sap/ui/core/mvc/Controller',
                'sap/ui/core/mvc/XMLView',
                'sap/ui/core/Icon',
                'sap/m/Button',
+               'sap/m/ButtonType',
+               'sap/ui/core/ValueState',
+               'sap/m/Dialog',
+               'sap/m/DialogType',
                'sap/ui/codeeditor/CodeEditor',
                'sap/m/Image',
                'sap/tnt/ToolHeader',
@@ -36,6 +40,10 @@ sap.ui.define(['sap/ui/core/mvc/Controller',
            XMLView,
            CoreIcon,
            Button,
+           ButtonType,
+           ValueState,
+           Dialog,
+           DialogType,
            CodeEditor,
            Image,
            ToolHeader,
@@ -757,6 +765,45 @@ sap.ui.define(['sap/ui/core/mvc/Controller',
          args.push(opt, exec);
 
          this.websocket.send("DBLCLK:" + JSON.stringify(args));
+
+         this.invokeWarning("Processing double click on: " + prop.name, 200);
+      },
+
+      invokeWarning: function(msg, tmout) {
+         this.cancelWarning();
+
+         this.warn_timeout = setTimeout(() => {
+            if (!this.warn_timeout) return;
+            delete this.warn_timeout;
+
+            this.oWarningDialog = new Dialog({
+               type: DialogType.Message,
+               title: "Warning",
+               state: ValueState.Warning,
+               content: new mText({ text: msg }),
+               beginButton: new Button({
+                  type: ButtonType.Emphasized,
+                  text: "OK",
+                  press: () => this.cancelWarning()
+               })
+            });
+
+            this.oWarningDialog.open();
+
+         }, tmout);
+
+      },
+
+      cancelWarning: function() {
+         if (this.warn_timeout) {
+            clearTimeout(this.warn_timeout);
+            delete this.warn_timeout;
+         }
+         if (this.oWarningDialog) {
+            this.oWarningDialog.close();
+            delete this.oWarningDialog;
+         }
+
       },
 
       getBaseClass: function(className) {
@@ -789,16 +836,24 @@ sap.ui.define(['sap/ui/core/mvc/Controller',
      /** @summary Entry point for all data from server */
      onWebsocketMsg: function(handle, msg, offset) {
 
+         // any message from server clear all warnings
+         this.cancelWarning();
+
          if (typeof msg != "string")
             return console.error("Browser do not uses binary messages len = " + mgs.byteLength);
 
+         // console.log('MSG', msg.substr(0,20));
+
          let mhdr = msg.split(":")[0];
          msg = msg.substr(mhdr.length+1);
 
+
          switch (mhdr) {
          case "INMSG":
             this.processInitMsg(msg);
             break;
+         case "NOPE":
+            break;
          case "EDITOR": { // update code editor
             let arr = JSON.parse(msg);
             let tab = this.findTab(arr[0]);