Remove localfile url option

Only interactively one can open file selection dialog

Author: linev

docs/JSROOT.md

@@ -28,7 +28,6 @@ To automate files loading and objects drawing, one can provide number of URL par
 
 - file - name of the file, which will be automatically open with page loading
 - files - array of file names for loading
-- localfile - automatically activate dialog for selecting local ROOT files
 - json - name of JSON file with stored ROOT object like histogram or canvas
 - item - item name to be displayed
 - opt - drawing option for the item
@@ -502,12 +501,6 @@ Main limitation here - user should interactively select files for reading.
 There is button __"..."__ on the main JSROOT page, which starts file selection dialog.
 If valid ROOT file is selected, JSROOT will be able to normally read content of such file.
 
-One could try to invoke such dialog with "localfile" parameter in URL string:
-
-   - <https://root.cern/js/latest/?localfile>
-
-It could happen, that due to security limitations automatic popup will be blocked.
-
 
 ## JSROOT with THttpServer
 

modules/gui/HierarchyPainter.mjs

@@ -3203,7 +3203,6 @@ class HierarchyPainter extends BasePainter {
       let prereq = GetOption('prereq') || '',
           filesdir = d.get('path') || '', // path used in normal gui
           filesarr = GetOptionAsArray('#file;files'),
-          localfile = GetOption('localfile'),
           jsonarr = GetOptionAsArray('#json;jsons'),
           expanditems = GetOptionAsArray('expand'),
           focusitem = GetOption('focus'),
@@ -3308,9 +3307,7 @@ class HierarchyPainter extends BasePainter {
             promise = this.openJsonFile(jsonarr.shift());
          else if (filesarr.length > 0)
             promise = this.openRootFile(filesarr.shift());
-         else if ((localfile !== null) && isFunc(this.selectLocalFile)) {
-            localfile = null; promise = this.selectLocalFile();
-         } else if (expanditems.length > 0)
+         else if (expanditems.length > 0)
             promise = this.expandItem(expanditems.shift());
          else if (style.length > 0)
             promise = this.applyStyle(style.shift());
@@ -3504,8 +3501,6 @@ class HierarchyPainter extends BasePainter {
          });
       });
 
-      let localfile_read_callback = null;
-
       if (!this.is_online && !this.no_select) {
 
          this.readSelectedFile = function() {
@@ -3531,28 +3526,14 @@ class HierarchyPainter extends BasePainter {
          });
 
          main.select('.gui_localFile').on('change', evnt => {
-            let files = evnt.target.files, promises = [];
+            let files = evnt.target.files;
 
             for (let n = 0; n < files.length; ++n) {
                let f = files[n];
                main.select('.gui_urlToLoad').property('value', f.name);
-               promises.push(this.openRootFile(f));
+               this.openRootFile(f);
             }
-
-            Promise.all(promises).then(() => {
-               if (localfile_read_callback) {
-                  localfile_read_callback();
-                  localfile_read_callback = null;
-               }
-            });
          });
-
-         this.selectLocalFile = async function() {
-            return new Promise(resolveFunc => {
-               localfile_read_callback = resolveFunc;
-               main.select('.gui_localFile').node().click();
-            });
-         };
       }
 
       let layout = main.select('.gui_layout');