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Title: HTML5 "autofocus" tag for input element in dillo
Author: rodarima
Created: Thu, 21 Dec 2023 11:43:16 +0000
State: open
We may want to integrate a patch to support autofocus from https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1033320 :
> The attached patch adds support for HTML5's autofocus tag to Dillo: this allows to automatically focus certain input fields as soon as the page with the form loads. We're using this to implement a barcode scanner on a raspberry pi 3, so that the browser is immediately ready to scan, without a need to touch into the input field first.
Here is the diff:
```diff
diff -ur dillo-3.0.5.orig/dw/fltkplatform.cc dillo-3.0.5/dw/fltkplatform.cc
--- dillo-3.0.5.orig/dw/fltkplatform.cc 2015-06-10 23:48:53.000000000 +0200
+++ dillo-3.0.5/dw/fltkplatform.cc 2023-03-18 12:41:21.910464773 +0100
@@ -370,6 +370,10 @@
{
}
+void FltkView::focusFltkWidget (Fl_Widget *widget)
+{
+}
+
void FltkView::allocateFltkWidget (Fl_Widget *widget,
core::Allocation *allocation)
{
diff -ur dillo-3.0.5.orig/dw/fltkplatform.hh dillo-3.0.5/dw/fltkplatform.hh
--- dillo-3.0.5.orig/dw/fltkplatform.hh 2015-06-30 16:06:08.000000000 +0200
+++ dillo-3.0.5/dw/fltkplatform.hh 2023-03-18 12:46:12.542094720 +0100
@@ -86,6 +86,7 @@
virtual void allocateFltkWidget (Fl_Widget *widget,
core::Allocation *allocation);
virtual void drawFltkWidget (Fl_Widget *widget, core::Rectangle *area);
+ virtual void focusFltkWidget (Fl_Widget *widget);
};
diff -ur dillo-3.0.5.orig/dw/fltkui.cc dillo-3.0.5/dw/fltkui.cc
--- dillo-3.0.5.orig/dw/fltkui.cc 2015-06-30 16:06:08.000000000 +0200
+++ dillo-3.0.5/dw/fltkui.cc 2023-03-18 12:33:36.914259944 +0100
@@ -460,6 +460,11 @@
this->view = NULL;
}
+void FltkResource::focus ()
+{
+ view->focusFltkWidget (widget);
+}
+
void FltkResource::sizeAllocate (core::Allocation *allocation)
{
this->allocation = *allocation;
@@ -574,6 +579,11 @@
FltkResource::setEnabled (enabled);
}
+template <class I> void FltkSpecificResource<I>::focus ()
+{
+ FltkResource::focus ();
+}
+
// ----------------------------------------------------------------------
class EnterButton : public Fl_Button {
diff -ur dillo-3.0.5.orig/dw/fltkui.hh dillo-3.0.5/dw/fltkui.hh
--- dillo-3.0.5.orig/dw/fltkui.hh 2015-06-30 16:06:09.000000000 +0200
+++ dillo-3.0.5/dw/fltkui.hh 2023-03-18 12:38:41.898264236 +0100
@@ -217,6 +217,8 @@
bool isEnabled ();
void setEnabled (bool enabled);
+
+ void focus ();
};
@@ -232,6 +234,8 @@
bool isEnabled ();
void setEnabled (bool enabled);
+
+ void focus ();
};
diff -ur dillo-3.0.5.orig/dw/fltkviewbase.cc dillo-3.0.5/dw/fltkviewbase.cc
--- dillo-3.0.5.orig/dw/fltkviewbase.cc 2015-06-30 16:06:09.000000000 +0200
+++ dillo-3.0.5/dw/fltkviewbase.cc 2023-03-18 12:18:12.234001790 +0100
@@ -711,6 +711,12 @@
add (widget);
}
+void FltkWidgetView::focusFltkWidget (Fl_Widget *widget)
+{
+ focused_child=widget;
+ widget->take_focus();
+}
+
void FltkWidgetView::removeFltkWidget (Fl_Widget *widget)
{
remove (widget);
diff -ur dillo-3.0.5.orig/dw/fltkviewbase.hh dillo-3.0.5/dw/fltkviewbase.hh
--- dillo-3.0.5.orig/dw/fltkviewbase.hh 2015-06-30 16:06:09.000000000 +0200
+++ dillo-3.0.5/dw/fltkviewbase.hh 2023-03-18 12:39:07.514936690 +0100
@@ -132,6 +132,7 @@
void allocateFltkWidget (Fl_Widget *widget,
core::Allocation *allocation);
void drawFltkWidget (Fl_Widget *widget, core::Rectangle *area);
+ void focusFltkWidget (Fl_Widget *widget);
};
} // namespace fltk
diff -ur dillo-3.0.5.orig/dw/ui.cc dillo-3.0.5/dw/ui.cc
--- dillo-3.0.5.orig/dw/ui.cc 2015-06-30 16:06:09.000000000 +0200
+++ dillo-3.0.5/dw/ui.cc 2023-03-18 12:41:55.403344022 +0100
@@ -223,6 +223,10 @@
{
}
+void Resource::focus ()
+{
+}
+
void Resource::emitEnter ()
{
activateEmitter.emitEnter(this);
diff -ur dillo-3.0.5.orig/dw/ui.hh dillo-3.0.5/dw/ui.hh
--- dillo-3.0.5.orig/dw/ui.hh 2015-06-30 16:06:09.000000000 +0200
+++ dillo-3.0.5/dw/ui.hh 2023-03-18 12:33:20.465828321 +0100
@@ -347,6 +347,8 @@
virtual bool isEnabled () = 0;
virtual void setEnabled (bool enabled) = 0;
+ virtual void focus () = 0;
+
inline void connectActivate (ActivateReceiver *receiver) {
activateEmitter.connectActivate (receiver); }
inline void connectClicked (ClickedReceiver *receiver) {
diff -ur dillo-3.0.5.orig/src/form.cc dillo-3.0.5/src/form.cc
--- dillo-3.0.5.orig/src/form.cc 2015-06-30 16:06:09.000000000 +0200
+++ dillo-3.0.5/src/form.cc 2023-03-18 12:40:04.192424547 +0100
@@ -431,7 +431,7 @@
DilloHtmlInputType inp_type;
Resource *resource = NULL;
Embed *embed = NULL;
- char *value, *name, *type, *init_str, *placeholder = NULL;
+ char *value, *name, *type, *init_str, *placeholder = NULL, *autofocus;
const char *attrbuf, *label;
bool init_val = false;
ResourceFactory *factory;
@@ -451,6 +451,7 @@
value = a_Html_get_attr_wdef(html, tag, tagsize, "value", NULL);
name = a_Html_get_attr_wdef(html, tag, tagsize, "name", NULL);
type = a_Html_get_attr_wdef(html, tag, tagsize, "type", "");
+ autofocus = a_Html_get_attr_wdef(html, tag, tagsize, "autofocus", NULL);
init_str = NULL;
inp_type = DILLO_HTML_INPUT_UNKNOWN;
@@ -541,6 +542,9 @@
if (resource)
embed = new Embed (resource);
+ if (resource && autofocus)
+ resource->focus();
+
if (inp_type != DILLO_HTML_INPUT_UNKNOWN) {
Html_add_input(html, inp_type, embed, name,
(init_str) ? init_str : "", init_val);
```
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