Do not render buttons in readonly screen

Closes #14803

sao/src/screen.js

@@ -836,10 +836,12 @@
             this._current_domain = [];
             this.offset = 0;
             this.order = this.default_order = attributes.order;
-            this.readonly = this.attributes.readonly || false;
+            this.screen_readonly = this.attributes.readonly || false;
             var access = Sao.common.MODELACCESS.get(model_name);
             if (!(access.write || access.create)) {
                 this.readonly = true;
+            } else {
+                this.readonly = this.screen_readonly;
             }
             this.search_count = 0;
             this.new_group(attributes.context || {});
@@ -2015,7 +2017,7 @@
         get_buttons: function() {
             var selected_records = (
                 this.current_view ? this.current_view.selected_records : []);
-            if (jQuery.isEmptyObject(selected_records)) {
+            if (jQuery.isEmptyObject(selected_records) || this.screen_readonly) {
                 return [];
             }
             var buttons = (

sao/src/view/form.js

@@ -130,9 +130,14 @@ function eval_pyson(value){
             }
         },
         _parse_button: function(node, attributes) {
-            var button = new Sao.common.Button(attributes);
-            button.el.click(button, this.view.button_clicked.bind(this.view));
-            this.view.state_widgets.push(button);
+            let button;
+            if (this.view.screen.screen_readonly) {
+                button = null;
+            } else {
+                button = new Sao.common.Button(attributes);
+                button.el.click(button, this.view.button_clicked.bind(this.view));
+                this.view.state_widgets.push(button);
+            }
             this.container.add(button, attributes);
         },
         _parse_link: function(node, attributes) {

sao/src/view/tree.js

@@ -87,6 +87,9 @@
             }
         },
         _parse_button: function(node, attributes) {
+            if (this.view.screen.screen_readonly) {
+                return;
+            }
             let button;
             if (parseInt(attributes.multiple || '0', 10)) {
                 button = new Sao.View.Tree.ButtonMultiple(attributes);

tryton/tryton/gui/window/view_form/screen/screen.py

@@ -49,10 +49,12 @@ class Screen:
         self.offset = 0
         self.windows = []
 
-        self.readonly = attributes.get('readonly', False)
+        self.screen_readonly = attributes.get('readonly', False)
         if not (MODELACCESS[model_name]['write']
                 or MODELACCESS[model_name]['create']):
             self.readonly = True
+        else:
+            self.readonly = self.screen_readonly
         self.search_count = 0
         if not attributes.get('row_activate'):
             self.row_activate = self.default_row_activate
@@ -1245,7 +1247,7 @@ class Screen:
             states = record.expr_eval(button.attrs.get('states', {}))
             return not (states.get('invisible') or states.get('readonly'))
 
-        if not self.selected_records:
+        if not self.selected_records or self.screen_readonly:
             return []
 
         buttons = self.current_view.get_buttons() if self.current_view else []

tryton/tryton/gui/window/view_form/view/form.py

@@ -261,9 +261,12 @@ class FormXMLViewParser(XMLViewParser):
             label.set_mnemonic_widget(widget.mnemonic_widget)
 
     def _parse_button(self, node, attributes):
-        button = Button(attributes)
-        button.connect('clicked', self.view.button_clicked)
-        self.view.state_widgets.append(button)
+        if self.view.screen.screen_readonly:
+            button = None
+        else:
+            button = Button(attributes)
+            button.connect('clicked', self.view.button_clicked)
+            self.view.state_widgets.append(button)
         self.container.add(button, attributes)
 
     def _parse_link(self, node, attributes):

tryton/tryton/gui/window/view_form/view/list.py

@@ -372,6 +372,8 @@ class TreeXMLViewParser(XMLViewParser):
             self.view.optionals[column.name].append(column)
 
     def _parse_button(self, node, attributes):
+        if self.view.screen.screen_readonly:
+            return
         if int(attributes.get('multiple', 0)):
             button = ButtonMutiple(attributes)
             button.connect('clicked', self.view.button_clicked)