Merge pull request #175 from milleniumbug/find_buttons

added gui buttons for finding/replacing

src/window.cc

@@ -876,7 +876,22 @@ void Window::search_and_replace_entry() {
   replace_entry_it->signal_changed().connect([this, replace_entry_it](){
     last_replace=replace_entry_it->get_text();
   });
-
+  EntryBox::get().buttons.emplace_back("↑", [this](){
+    if(notebook.get_current_page()!=-1)
+        notebook.get_current_view()->search_backward();
+  });
+  EntryBox::get().buttons.back().set_tooltip_text("Find previous\n\nShortcut: press Shift+Enter in the search field");
+  EntryBox::get().buttons.emplace_back("⇄", [this, replace_entry_it](){
+    if(notebook.get_current_page()!=-1) {
+      notebook.get_current_view()->replace_forward(replace_entry_it->get_text());
+    }
+  });
+  EntryBox::get().buttons.back().set_tooltip_text("Replace current selection\n\nShortcut: press Enter in the replacement field");
+  EntryBox::get().buttons.emplace_back("↓", [this](){
+    if(notebook.get_current_page()!=-1)
+      notebook.get_current_view()->search_forward();
+  });
+  EntryBox::get().buttons.back().set_tooltip_text("Find next\n\nShortcut: press Enter in the search field");
   EntryBox::get().buttons.emplace_back("Replace all", [this, replace_entry_it](){
     if(notebook.get_current_page()!=-1)
       notebook.get_current_view()->replace_all(replace_entry_it->get_text());