aisingapore#376 - upload step update 2 for chrome mode

There is likely a change in Chrome Devtools protocol which returns back DOM.attributeModified event messages after DOM.setFileInputFiles method is used in update step. This causes subsequent steps after upload step not to work.

Patch 1 works by filtering and discarding the DOM.attributeModified event messages so that subsequent communication messages with Chrome will continue to work.

Patch 2 works by filtering and discarding DOM. events completely. And also send a DOM.disable call to disable further sending of DOM. event messages.

src/tagui_chrome.php

@@ -53,10 +53,8 @@
 else if (strpos($tagui_intent,'Target.detachFromTarget') !== false) $intent_result_string = trim($client->receive());
 
 // ignore irrelevant DOM.setChildNodes events received when using DOM.querySelector to get NodeId for upload step
-// and ignore irrelevant DOM.attributeModified events received after using DOM.setFileInputFiles in upload step
-while ((strpos($intent_result_string,"DOM.setChildNodes") !== false) or 
-(strpos($intent_result_string,"DOM.attributeModified") !== false))
-{$intent_result_string = trim($client->receive());}
+// and ignore DOM. events received after using DOM.setFileInputFiles in upload step, before DOM.disable kicks in
+while (strpos($intent_result_string,'{"method":"DOM.') !== false) {$intent_result_string = trim($client->receive());}
 
 // save intent_result to interface out-file
 echo "[tagui] OUTPUT - \n" . "[" . $tagui_count . "] " . $intent_result_string . "\n\n";

src/tagui_header.js

@@ -588,6 +588,8 @@ ws_json = JSON.parse(ws_message);
 ws_message = chrome_step('DOM.querySelector',{nodeId: ws_json.result.root.nodeId, selector: selector});
 ws_json = JSON.parse(ws_message);
 ws_message = chrome_step('DOM.setFileInputFiles',{files: [filename], nodeId: ws_json.result.nodeId});
+ws_json = JSON.parse(ws_message);
+ws_message = chrome_step('DOM.disable'); // disable invoked DOM agent from running and firing events
 } catch(e) {casper.echo('ERROR - unable to upload ' + selector + ' as ' + filename);}};
 
 chrome.download = function(url,filename) { // download function for downloading url resource to file

src/test/positive_test.signature

@@ -615,6 +615,8 @@ ws_json = JSON.parse(ws_message);
 ws_message = chrome_step('DOM.querySelector',{nodeId: ws_json.result.root.nodeId, selector: selector});
 ws_json = JSON.parse(ws_message);
 ws_message = chrome_step('DOM.setFileInputFiles',{files: [filename], nodeId: ws_json.result.nodeId});
+ws_json = JSON.parse(ws_message);
+ws_message = chrome_step('DOM.disable'); // disable invoked DOM agent from running and firing events
 } catch(e) {casper.echo('ERROR - unable to upload ' + selector + ' as ' + filename);}};
 
 chrome.download = function(url,filename) { // download function for downloading url resource to file