From 175d195c0ed56487322a03939a1c60cb05cb3f8e Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Wed, 13 Apr 2011 12:16:56 +0000
Subject: Introduce new committable/preCommit methods, that can be used to
 block a commit from inside the widgets.

---
 client/macrowindow.cc       |  2 ++
 client/widgets/multilist.cc | 33 +++++++++++++--------------------
 client/widgets/multilist.h  |  9 ++++++++-
 client/widgets/widget.cc    | 22 +++++++++++++++++++++-
 client/widgets/widget.h     | 14 +++++++++++++-
 5 files changed, 57 insertions(+), 23 deletions(-)

diff --git a/client/macrowindow.cc b/client/macrowindow.cc
index 00eb1ed..bbfab8e 100644
--- a/client/macrowindow.cc
+++ b/client/macrowindow.cc
@@ -165,6 +165,8 @@ void MacroWindow::initMacro(QDomNode &node)
 
 bool MacroWindow::doCommit()
 {
+  if(mainwidget->committable(true) == false) return false;
+
   if(mainwidget->valid()) {
 
     QVector< Widget* > wlist;
diff --git a/client/widgets/multilist.cc b/client/widgets/multilist.cc
index 3d03ce5..e261b52 100644
--- a/client/widgets/multilist.cc
+++ b/client/widgets/multilist.cc
@@ -126,36 +126,23 @@ void MultiList::changed()
   DEBUG(multilist, "Multilist innerwidget was changed\n");
 }
 
-
-bool MultiList::preValid()
+bool MultiList::preCommit()
 {
-  return list->count() != 0;
-  
-  /*
   if(innerwidget_has_changes) {
     switch(MessageBox::warning(NULL,
-                               "Gem ændringerne i listen?",
-                               "Der er lavet en ændring som ikke er tilføjet til listen.\n"
-                               "Ønsker du at tilføje ændringen til listen inden du gemmer makroen?",
-                               MessageBox::Save | MessageBox::Close | MessageBox::Cancel)) {
-    case MessageBox::Save:
-      if(innerwidget && innerwidget->valid()) {
-        add();
-      } else {
-        return false;
-      }
-      break;
-    case MessageBox::Close:
+             tr("Inner widget changed."),
+             tr("The inner widget changed, and you didn't add it to the list.\n"
+                "Do you want to continue and discard the change?"),
+             MessageBox::Ignore | MessageBox::Cancel)) {
+    case MessageBox::Ignore:
       break;
     case MessageBox::Cancel:
     default:
-      // FIXME: How to we actually block the commit and return to the editor?
       return false;
-      break;
     }
   }
+
   return true;
-  */
 }
 
 QString MultiList::value()
@@ -218,6 +205,12 @@ void MultiList::add()
   }
 }
 
+void MultiList::setValues()
+{
+  Widget::setValues();
+  innerwidget_has_changes = false;
+}
+
 bool MultiList::setKeyboardFocus()
 {
   if(innerwidget) return innerwidget->setKeyboardFocus();
diff --git a/client/widgets/multilist.h b/client/widgets/multilist.h
index e86df28..878603f 100644
--- a/client/widgets/multilist.h
+++ b/client/widgets/multilist.h
@@ -60,11 +60,12 @@ public:
   QString value();
   void setValue(QString value, QString source = "");
 
-  bool preValid();
   void setWdgValid(bool valid);
 
   bool setKeyboardFocus();
 
+  void setValues();
+
 public slots:
   void changed();
   void remove();
@@ -73,6 +74,12 @@ public slots:
 protected:
   bool eventFilter(QObject *obj, QEvent *event);
 
+  // Implement in subclasses to be able to block commits.
+  bool preCommit();
+
+  // Don't connect children 'wasChanged' signal to parent.
+  void connectChild(Widget *) {}
+
 private:
   QListWidget *list;
   Widget *innerwidget;
diff --git a/client/widgets/widget.cc b/client/widgets/widget.cc
index 33e4309..c0c9e81 100644
--- a/client/widgets/widget.cc
+++ b/client/widgets/widget.cc
@@ -118,6 +118,21 @@ bool Widget::local()
   return widget_local;
 }
 
+bool Widget::committable(bool deep)
+{
+  if(preCommit() == false) return false;
+
+  if(deep == false) return true;
+
+  QVector< Widget* >::iterator i = children.begin();
+  while(i != children.end()) {
+    if(*i && (*i)->committable(deep) == false) return false;
+    i++;
+  }
+
+  return true;
+}
+
 bool Widget::valid(bool deep)
 {
   if(enabled() == false) return true;
@@ -288,6 +303,11 @@ void Widget::childWasChanged()
   emit wasChanged();
 }
 
+void Widget::connectChild(Widget *child)
+{
+  connect(child, SIGNAL(wasChanged()), this, SLOT(childWasChanged()));
+}
+
 void Widget::addChild(Widget *widget)
 {
   if(widget == NULL) {
@@ -296,7 +316,7 @@ void Widget::addChild(Widget *widget)
     return;
   }
   children.push_back(widget);
-  connect(widget, SIGNAL(wasChanged()), this, SLOT(childWasChanged()));
+  connectChild(widget);
   //widget->setParent(this);
 }
 
diff --git a/client/widgets/widget.h b/client/widgets/widget.h
index bb37c51..3de148f 100644
--- a/client/widgets/widget.h
+++ b/client/widgets/widget.h
@@ -52,6 +52,9 @@
  *  value.
  * @att help This attribute contains a help text for this widget. It will be
  *  shown to the user when the mouse is hovering over the widget.
+ * @att local This attribute is a boolean telling wether the field can be stored
+ *  in the database on commits. It can be either 'true' or 'false'. The default
+ *  is 'false'.
  */
 
 class QLayout;
@@ -75,6 +78,9 @@ public:
   bool valid(bool deep = false);
   void setValid(bool valid, bool deep = false);
 
+  // Make sanity check before commit.
+  bool committable(bool deep = false);
+
   // Implement in subclasses to contribute to the validation.
   virtual bool preValid() { return true; }
 
@@ -95,7 +101,8 @@ public:
   Widget *findWidget(QString name, bool deep = false);
   QVector< Widget* > widgetList(bool deep = false);
   void addChild(Widget *widget);
-  void setValues();
+
+  virtual void setValues();
 
 signals:
   void wasChanged();
@@ -115,6 +122,11 @@ protected:
   QWidget *widget;
   bool hideChildren;
 
+  // Implement in subclasses to be able to block commits.
+  virtual bool preCommit() { return true; }
+
+  // Overload this to avoid children 'wasChanged' connection.
+  virtual void connectChild(Widget *child);
   void addChildren(QDomNode &xml_node, QLayout *layout);
 
   LUA *lua;
-- 
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