From 5e40b4d2e83128721863e5c56c7f3b65aea0459e Mon Sep 17 00:00:00 2001
From: Marc Zinnschlag <marc@zpages.de>
Date: Tue, 8 Dec 2015 12:04:45 +0100
Subject: [PATCH] page switching mechanism

---
 apps/opencs/CMakeLists.txt          |  2 +-
 apps/opencs/model/prefs/state.cpp   | 10 ++++++++++
 apps/opencs/model/prefs/state.hpp   |  2 ++
 apps/opencs/view/prefs/dialogue.cpp | 27 ++++++++++++++++++++++++++-
 apps/opencs/view/prefs/dialogue.hpp |  5 +++++
 apps/opencs/view/prefs/pagebase.cpp | 19 +++++++++++++++++++
 apps/opencs/view/prefs/pagebase.hpp | 27 +++++++++++++++++++++++++++
 7 files changed, 90 insertions(+), 2 deletions(-)
 create mode 100644 apps/opencs/view/prefs/pagebase.cpp
 create mode 100644 apps/opencs/view/prefs/pagebase.hpp

diff --git a/apps/opencs/CMakeLists.txt b/apps/opencs/CMakeLists.txt
index b58000b56..1e666c77d 100644
--- a/apps/opencs/CMakeLists.txt
+++ b/apps/opencs/CMakeLists.txt
@@ -124,7 +124,7 @@ opencs_units_noqt (view/settings
     )
 
 opencs_units (view/prefs
-    dialogue
+    dialogue pagebase
     )
 
 opencs_units (model/settings
diff --git a/apps/opencs/model/prefs/state.cpp b/apps/opencs/model/prefs/state.cpp
index d8a0a5614..c484a98d6 100644
--- a/apps/opencs/model/prefs/state.cpp
+++ b/apps/opencs/model/prefs/state.cpp
@@ -98,6 +98,16 @@ CSMPrefs::State::Iterator CSMPrefs::State::end()
     return mCategories.end();
 }
 
+CSMPrefs::Category& CSMPrefs::State::getCategory (const std::string& key)
+{
+    Iterator iter = mCategories.find (key);
+
+    if (iter==mCategories.end())
+        throw std::logic_error ("Invalid user settings category: " + key);
+
+    return iter->second;
+}
+
 CSMPrefs::State& CSMPrefs::State::get()
 {
     if (!sThis)
diff --git a/apps/opencs/model/prefs/state.hpp b/apps/opencs/model/prefs/state.hpp
index d643dfa4a..a2e7aa038 100644
--- a/apps/opencs/model/prefs/state.hpp
+++ b/apps/opencs/model/prefs/state.hpp
@@ -59,6 +59,8 @@ namespace CSMPrefs
 
             Iterator end();
 
+            Category& getCategory (const std::string& key);
+
             static State& get();
     };
 
diff --git a/apps/opencs/view/prefs/dialogue.cpp b/apps/opencs/view/prefs/dialogue.cpp
index ec43d853d..c4480fec4 100644
--- a/apps/opencs/view/prefs/dialogue.cpp
+++ b/apps/opencs/view/prefs/dialogue.cpp
@@ -10,6 +10,8 @@
 
 #include "../../model/prefs/state.hpp"
 
+#include "pagebase.hpp"
+
 void CSVPrefs::Dialogue::buildCategorySelector (QSplitter *main)
 {
     mList = new QListWidget (main);
@@ -35,7 +37,8 @@ void CSVPrefs::Dialogue::buildCategorySelector (QSplitter *main)
 
     mList->setMaximumWidth (maxWidth + 10);
 
-    /// \todo connect to selection signal
+    connect (mList, SIGNAL (currentItemChanged (QListWidgetItem *, QListWidgetItem *)),
+        this, SLOT (selectionChanged (QListWidgetItem *, QListWidgetItem *)));
 }
 
 void CSVPrefs::Dialogue::buildContentArea (QSplitter *main)
@@ -86,3 +89,25 @@ void CSVPrefs::Dialogue::show()
 
     QWidget::show();
 }
+
+void CSVPrefs::Dialogue::selectionChanged (QListWidgetItem *current, QListWidgetItem *previous)
+{
+    if (current)
+    {
+        std::string key = current->text().toUtf8().data();
+
+        for (int i=0; i<mContent->count(); ++i)
+        {
+            PageBase& page = dynamic_cast<PageBase&> (*mContent->widget (i));
+
+            if (page.getCategory().getKey()==key)
+            {
+                mContent->setCurrentIndex (i);
+                return;
+            }
+        }
+
+        PageBase *page = new PageBase (CSMPrefs::get().getCategory (key), mContent);
+        mContent->setCurrentIndex (mContent->addWidget (page));
+    }
+}
diff --git a/apps/opencs/view/prefs/dialogue.hpp b/apps/opencs/view/prefs/dialogue.hpp
index 78c832c9f..6bee54eb8 100644
--- a/apps/opencs/view/prefs/dialogue.hpp
+++ b/apps/opencs/view/prefs/dialogue.hpp
@@ -6,6 +6,7 @@
 class QSplitter;
 class QListWidget;
 class QStackedWidget;
+class QListWidgetItem;
 
 namespace CSVPrefs
 {
@@ -33,6 +34,10 @@ namespace CSVPrefs
         public slots:
 
             void show();
+
+        private slots:
+
+            void selectionChanged (QListWidgetItem *current, QListWidgetItem *previous);
     };
 }
 
diff --git a/apps/opencs/view/prefs/pagebase.cpp b/apps/opencs/view/prefs/pagebase.cpp
new file mode 100644
index 000000000..28c33a94a
--- /dev/null
+++ b/apps/opencs/view/prefs/pagebase.cpp
@@ -0,0 +1,19 @@
+
+#include "pagebase.hpp"
+
+#include <QLabel>
+
+#include "../../model/prefs/category.hpp"
+
+CSVPrefs::PageBase::PageBase (CSMPrefs::Category& category, QWidget *parent)
+: QScrollArea (parent), mCategory (category)
+{
+QLabel *temp = new QLabel (category.getKey().c_str(), this);
+setWidget (temp);
+
+}
+
+CSMPrefs::Category& CSVPrefs::PageBase::getCategory()
+{
+    return mCategory;
+}
diff --git a/apps/opencs/view/prefs/pagebase.hpp b/apps/opencs/view/prefs/pagebase.hpp
new file mode 100644
index 000000000..affe49f4a
--- /dev/null
+++ b/apps/opencs/view/prefs/pagebase.hpp
@@ -0,0 +1,27 @@
+#ifndef CSV_PREFS_PAGEBASE_H
+#define CSV_PREFS_PAGEBASE_H
+
+#include <QScrollArea>
+
+namespace CSMPrefs
+{
+    class Category;
+}
+
+namespace CSVPrefs
+{
+    class PageBase : public QScrollArea
+    {
+            Q_OBJECT
+
+            CSMPrefs::Category& mCategory;
+
+        public:
+
+            PageBase (CSMPrefs::Category& category, QWidget *parent);
+
+            CSMPrefs::Category& getCategory();
+    };
+}
+
+#endif