livetrax/libs/widgets/searchbar.cc

/*
 * Copyright (C) 2017 Robin Gareus <robin@gareus.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <iostream>

#include "gtkmm2ext/keyboard.h"
#include "widgets/searchbar.h"

using namespace ArdourWidgets;

SearchBar::SearchBar (const std::string& label, bool icon_resets)
	: placeholder_text (label)
	, icon_click_resets (icon_resets)
{
	set_text (placeholder_text);
	set_alignment (Gtk::ALIGN_CENTER);
	signal_key_press_event().connect (sigc::mem_fun (*this, &SearchBar::key_press_event));
	signal_focus_in_event().connect (sigc::mem_fun (*this, &SearchBar::focus_in_event));
	signal_focus_out_event().connect (sigc::mem_fun (*this, &SearchBar::focus_out_event));
	signal_changed().connect (sigc::mem_fun (*this, &SearchBar::search_string_changed));
	signal_icon_release().connect (sigc::mem_fun (*this, &SearchBar::icon_clicked_event));
}

bool
SearchBar::focus_in_event (GdkEventFocus*)
{
	if (get_text ().compare (placeholder_text) == 0) {
		set_text ("");
	}

	icon = get_icon_pixbuf ();
	if (icon) {
		set_icon_from_pixbuf (Glib::RefPtr<Gdk::Pixbuf> ());
	}
	return true;
}

bool
SearchBar::focus_out_event (GdkEventFocus*)
{
	if (get_text ().empty ()) {
		set_text (placeholder_text);
	}

	if (icon) {
		set_icon_from_pixbuf (icon);
		icon.reset ();
	}

	search_string_changed ();
	return false;
}

bool
SearchBar::key_press_event (GdkEventKey* ev)
{
	switch (ev->keyval) {
	case GDK_Escape: 
		set_text (placeholder_text);
		return true;
	default:
		break;
	}

	return false;
}

void
SearchBar::icon_clicked_event (Gtk::EntryIconPosition, const GdkEventButton*)
{
	if (icon_click_resets) {
		reset ();
	}
	else {
		search_string_changed ();
	}
}

void
SearchBar::search_string_changed () const
{
	const std::string& text = get_text ();
	if (text.empty() || text.compare (placeholder_text) == 0) {
		sig_search_string_updated ("");
		return;
	}
	sig_search_string_updated (text);
}

void
SearchBar::reset ()
{
	set_text (placeholder_text);
	search_string_changed ();
}