[gnote] Make main window to search only searchable items

[Aurimas Černius <aurimasc src gnome org>]

commit 3e4b3aaa79c31c705ce2da2f6155794661c4f79e
Author: Aurimas Černius <aurisc4 gmail com>
Date:   Tue May 14 23:15:11 2013 +0300

    Make main window to search only searchable items
    
    Introduce concept of "searchable item", which is where main
    window can perform search.
    Only allow search in main window, when searchable item is embedded.

 src/recentchanges.cpp |   76 +++++++++++++++++++++++++++++++++++++++++++++---
 src/recentchanges.hpp |    3 ++
 src/utils.cpp         |   15 +++++++++
 src/utils.hpp         |   10 ++++++
 4 files changed, 99 insertions(+), 5 deletions(-)
---
diff --git a/src/recentchanges.cpp b/src/recentchanges.cpp
index e582d56..9fe031e 100644
--- a/src/recentchanges.cpp
+++ b/src/recentchanges.cpp
@@ -206,7 +206,27 @@ namespace gnote {
     grid->set_margin_left(5);
     grid->set_margin_right(5);
     grid->set_hexpand(false);
-    grid->add(m_search_entry);
+    grid->attach(m_search_entry, 0, 0, 1, 1);
+
+    m_find_next_prev_box.set_margin_left(5);
+
+    Gtk::Button *find_next_button = manage(new Gtk::Button(_("Find _Next"), true));
+    find_next_button->set_image(*manage(new Gtk::Image(Gtk::Stock::GO_FORWARD, Gtk::ICON_SIZE_MENU)));
+    find_next_button->set_always_show_image(true);
+    find_next_button->signal_clicked()
+      .connect(sigc::mem_fun(*this, &NoteRecentChanges::on_find_next_button_clicked));
+    find_next_button->show();
+    m_find_next_prev_box.attach(*find_next_button, 0, 0, 1, 1);
+
+    Gtk::Button *find_prev_button = manage(new Gtk::Button(_("Find _Previous"), true));
+    find_prev_button->set_image(*manage(new Gtk::Image(Gtk::Stock::GO_BACK, Gtk::ICON_SIZE_MENU)));
+    find_prev_button->set_always_show_image(true);
+    find_prev_button->signal_clicked()
+      .connect(sigc::mem_fun(*this, &NoteRecentChanges::on_find_prev_button_clicked));
+    find_prev_button->show();
+    m_find_next_prev_box.attach(*find_prev_button, 1, 0, 1, 1);
+
+    grid->attach(m_find_next_prev_box, 1, 0, 1, 1);
     grid->show();
 
     m_search_box.add(*grid);
@@ -220,7 +240,26 @@ namespace gnote {
     }
     else {
       m_search_box.hide();
-      m_search_notes_widget.perform_search("");
+      utils::SearchableItem *searchable_widget = dynamic_cast<utils::SearchableItem*>(currently_embedded());
+      if(searchable_widget) {
+        searchable_widget->perform_search("");
+      }
+    }
+  }
+
+  void NoteRecentChanges::on_find_next_button_clicked()
+  {
+    utils::SearchableItem *searchable_widget = dynamic_cast<utils::SearchableItem*>(currently_embedded());
+    if(searchable_widget) {
+      searchable_widget->goto_next_result();
+    }
+  }
+
+  void NoteRecentChanges::on_find_prev_button_clicked()
+  {
+    utils::SearchableItem *searchable_widget = dynamic_cast<utils::SearchableItem*>(currently_embedded());
+    if(searchable_widget) {
+      searchable_widget->goto_previous_result();
     }
   }
 
@@ -230,7 +269,10 @@ namespace gnote {
     m_search_entry.grab_focus();
     Glib::ustring text = m_search_entry.get_text();
     if(text != "") {
-      m_search_notes_widget.perform_search(text);
+      utils::SearchableItem *searchable_widget = dynamic_cast<utils::SearchableItem*>(currently_embedded());
+      if(searchable_widget) {
+        searchable_widget->perform_search(text);
+      }
     }
   }
 
@@ -474,7 +516,10 @@ namespace gnote {
 
     std::string search_text = get_search_text();
     if(search_text.empty()) {
-      m_search_notes_widget.perform_search(search_text);
+      utils::SearchableItem *searchable_widget = dynamic_cast<utils::SearchableItem*>(currently_embedded());
+      if(searchable_widget) {
+        searchable_widget->perform_search(search_text);
+      }
     }
     else {
       m_entry_changed_timeout->reset(500);
@@ -500,7 +545,10 @@ namespace gnote {
       return;
     }
 
-    m_search_notes_widget.perform_search(search_text);
+    utils::SearchableItem *searchable_widget = dynamic_cast<utils::SearchableItem*>(currently_embedded());
+    if(searchable_widget) {
+      searchable_widget->perform_search(search_text);
+    }
   }
 
   std::string NoteRecentChanges::get_search_text()
@@ -515,6 +563,24 @@ namespace gnote {
     bool search = dynamic_cast<SearchNotesWidget*>(&widget) == &m_search_notes_widget;
     m_all_notes_button->set_visible(!search);
     m_new_note_button->set_visible(search);
+
+    try {
+      utils::SearchableItem & searchable_item = dynamic_cast<utils::SearchableItem&>(widget);
+      m_search_button.show();
+      if(searchable_item.supports_goto_result()) {
+        m_find_next_prev_box.show();
+      }
+      else {
+        m_find_next_prev_box.hide();
+      }
+      if(m_search_button.get_active() && m_search_entry.get_text() != "") {
+        searchable_item.perform_search(m_search_entry.get_text());
+      }
+    }
+    catch(std::bad_cast &) {
+      m_search_button.set_active(false);
+      m_search_button.hide();
+    }
   }
 
   void NoteRecentChanges::on_show_window_menu(Gtk::Button *button)
diff --git a/src/recentchanges.hpp b/src/recentchanges.hpp
index 6558cfa..25ace85 100644
--- a/src/recentchanges.hpp
+++ b/src/recentchanges.hpp
@@ -79,6 +79,8 @@ private:
   void update_toolbar(utils::EmbeddableWidget & widget);
   void on_show_window_menu(Gtk::Button *button);
   void on_search_button_toggled();
+  void on_find_next_button_clicked();
+  void on_find_prev_button_clicked();
   Gtk::Menu *make_window_menu(Gtk::Button *button, const std::vector<Gtk::MenuItem*> & items);
   std::vector<Gtk::MenuItem*> & make_menu_items(std::vector<Gtk::MenuItem*> & items,
                                                 const std::vector<Glib::RefPtr<Gtk::Action> > & actions);
@@ -88,6 +90,7 @@ private:
   SearchNotesWidget   m_search_notes_widget;
   Gtk::Grid           m_content_vbox;
   Gtk::Alignment      m_search_box;
+  Gtk::Grid           m_find_next_prev_box;
   Gtk::ToggleButton   m_search_button;
   Gtk::Alignment      m_embeded_toolbar;
   Gtk::Grid           m_embed_box;
diff --git a/src/utils.cpp b/src/utils.cpp
index b157b29..ac5ed08 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -804,6 +804,21 @@ namespace gnote {
       set_active(false);
     }
     
+
+    bool SearchableItem::supports_goto_result()
+    {
+      return false;
+    }
+
+    bool SearchableItem::goto_next_result()
+    {
+      return false;
+    }
+
+    bool SearchableItem::goto_previous_result()
+    {
+      return false;
+    }
     
 
   }
diff --git a/src/utils.hpp b/src/utils.hpp
index 089e1a9..1153f2c 100644
--- a/src/utils.hpp
+++ b/src/utils.hpp
@@ -296,6 +296,16 @@ namespace gnote {
     };
 
 
+    class SearchableItem
+    {
+    public:
+      virtual void perform_search(const std::string & search_text) = 0;
+      virtual bool supports_goto_result();
+      virtual bool goto_next_result();
+      virtual bool goto_previous_result();
+    };
+
+
   }
 }