From 881dd5577887267d76437631ccd0f456d56f9d99 Mon Sep 17 00:00:00 2001
From: matthewt <matthewt@03d0b0b2-0e1a-0410-a411-fdb2f4bd65d7>
Date: Tue, 11 Mar 2008 02:17:31 +0000
Subject: special exists event, force_events

---
 lib/Reaction/UI/ViewPort.pm                           | 12 ++++++++++--
 lib/Reaction/UI/ViewPort/Field/Role/Mutable/Simple.pm |  2 ++
 lib/Reaction/UI/Widget/Field/Mutable.pm               |  7 +++++++
 share/skin/default/layout/field/mutable/boolean.tt    |  5 +++++
 4 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/lib/Reaction/UI/ViewPort.pm b/lib/Reaction/UI/ViewPort.pm
index 0e9cbb2..1c2b755 100644
--- a/lib/Reaction/UI/ViewPort.pm
+++ b/lib/Reaction/UI/ViewPort.pm
@@ -18,7 +18,7 @@ class ViewPort which {
   has _tangent_stacks => (
     isa => 'HashRef', is => 'ro', default => sub { {} }
   );
-  has ctx => (isa => 'Catalyst', is => 'ro', required => 1);
+  has ctx => (isa => 'Catalyst', is => 'ro'); #, required => 1);
 
   implements _build_layout => as {
     '';
@@ -90,13 +90,19 @@ class ViewPort which {
 
   implements handle_events => as {
     my ($self, $events) = @_;
+    my $exists = exists $events->{exists};
+    if ($exists) {
+      my %force = $self->force_events;
+      my @need = grep { !exists $events->{$_} } keys %force;
+      @{$events}{@need} = @force{@need};
+    }
     foreach my $event ($self->accept_events) {
       if (exists $events->{$event}) {
         if (DEBUG_EVENTS) {
           my $name = join(' at ', $self, $self->location);
           $self->ctx->log->debug(
             "Applying Event: $event on $name with value: "
-            .$events->{$event}
+            .(defined $events->{$event} ? $events->{$event} : '<undef>')
           );
         }
         $self->$event($events->{$event});
@@ -106,6 +112,8 @@ class ViewPort which {
 
   implements accept_events => as { () };
 
+  implements force_events => as { () };
+
   implements event_id_for => as {
     my ($self, $name) = @_;
     return join(':', $self->location, $name);
diff --git a/lib/Reaction/UI/ViewPort/Field/Role/Mutable/Simple.pm b/lib/Reaction/UI/ViewPort/Field/Role/Mutable/Simple.pm
index 66fa464..4244b31 100644
--- a/lib/Reaction/UI/ViewPort/Field/Role/Mutable/Simple.pm
+++ b/lib/Reaction/UI/ViewPort/Field/Role/Mutable/Simple.pm
@@ -31,6 +31,8 @@ role Simple which {
 
   around accept_events => sub { ('value_string', shift->(@_)) };
 
+  around force_events => sub { (value_string => '', shift->(@_)) };
+
 };
 
 1;
diff --git a/lib/Reaction/UI/Widget/Field/Mutable.pm b/lib/Reaction/UI/Widget/Field/Mutable.pm
index 98d7e9b..c4d2e44 100644
--- a/lib/Reaction/UI/Widget/Field/Mutable.pm
+++ b/lib/Reaction/UI/Widget/Field/Mutable.pm
@@ -8,6 +8,13 @@ class Mutable is 'Reaction::UI::Widget::Field', which {
      arg 'field_id' => event_id 'value_string';
      arg 'field_name' => event_id 'value_string' unless defined $_{field_name};
      arg 'field_type' => 'text';
+
+     # these two are to fire force_events in viewports
+     # where you can end up without an event for e.g.
+     # HTML checkbox fields
+
+     arg 'exists_event' => event_id 'exists';
+     arg 'exists_value' => 1;
    };
 
    implements fragment message_fragment {
diff --git a/share/skin/default/layout/field/mutable/boolean.tt b/share/skin/default/layout/field/mutable/boolean.tt
index f50b377..6d70f36 100644
--- a/share/skin/default/layout/field/mutable/boolean.tt
+++ b/share/skin/default/layout/field/mutable/boolean.tt
@@ -1,5 +1,10 @@
 =extends field/mutable
 
+=for layout widget
+
+<input name="[% exists_event %]" type="hidden" value="[% exists_value %]" />
+[% call_next %]
+
 =for layout field_body
 
 value="1" [% is_checked %]
-- 
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