notepad_rename.cpp

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/*
 * File Name: notepad_rename.cpp
 */

/*
 * This file is part of notepad.
 *
 * notepad 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.
 *
 * notepad 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, see <http://www.gnu.org/licenses/>.
 */
 
/**
 * Copyright (C) 2010 IREX Technologies B.V.
 * All rights reserved.
 */

//----------------------------------------------------------------------------
// Include Files
//----------------------------------------------------------------------------

#include <gtk/gtk.h>

#include <libergtk/ergtk.h>
#include <liberkeyb/ergtk-keyb.h>

#include "i18n.h"
#include "log.h"
#include "notepad_rename.h"


//============================================================================
// Local defines
//============================================================================

#define WINDOW_TOP_PADDING         46
#define WINDOW_BOTTOM_PADDING      10
#define WINDOW_H_PADDING           40
#define PREVNEXT_HEIGHT            20
#define PREVNEXT_ARROW_WIDTH      140
#define TITLE_V_PADDING            10  // vertical padding around title
#define TITLE_SPACING              20  // space between path and number of items in title
#define TITLE_PATH_SPACING         10  // space between path elements in title
#define FILEGRID_V_PADDING         10  // vertical padding around the file grid
#define LISTVIEW_COL_SPACING       20  // space between columns in listview
#define LISTVIEW_ICON_WIDTH        30
#define LISTVIEW_ICON_HEIGHT       30

#define POPUP_DIALOG_WIDTH         600
#define POPUP_DIALOG_V_PADDING     10
#define POPUP_DIALOG_H_PADDING     10
#define POPUP_DIALOG_V_SPACING     10
#define POPUP_DIALOG_H_SPACING     10

#define BUTTON_WIDTH               -1
#define BUTTON_HEIGHT              27

#define TEXT_ENTRY_WIDTH           300
#define TEXT_ENTRY_HEIGHT          27

#define TITLE_HEIGHT               44   // total height of titlebar

#define MAX_FILENAME_LEN           200  // 200 chars filename allowed

//----------------------------------------------------------------------------
// Static Variables
//----------------------------------------------------------------------------

static GtkWidget* g_dialog          = NULL;
static GtkWidget* g_rename_label    = NULL;
static GtkWidget* g_input_entry     = NULL;
static GtkWidget* g_rename_button   = NULL;
static GtkWidget* g_cancel_button   = NULL; 
static gchar*     g_lastfilename    = NULL;

//============================================================================
// Local Function Definitions
//============================================================================

static void rename_on_hbox_size_allocate(GtkWidget* widget, GtkAllocation* allocation, gpointer user_data);
static void rename_on_rename_button_clicked(GtkWidget* widget, gpointer data);
static void rename_on_cancel_button_clicked(GtkWidget* widget, gpointer data);


//============================================================================
// Functions Implementation
//============================================================================

GtkWidget* rename_dialog_create(const GtkWidget* parent, const gchar* current_filename)
{

    // dialog
    GtkWidget* dialog = gtk_dialog_new ();
    gtk_dialog_set_has_separator(GTK_DIALOG(dialog), FALSE);
    gtk_window_set_title (GTK_WINDOW(dialog), "");
    gtk_window_set_resizable(GTK_WINDOW(dialog), FALSE);
    gtk_window_set_transient_for(GTK_WINDOW(dialog), GTK_WINDOW(parent));
    gtk_window_set_modal(GTK_WINDOW(dialog), TRUE);
    g_dialog = dialog;

    // alignment
    GtkWidget* alignment = gtk_alignment_new(0.0, 0.0, 1.0, 0);
    gtk_alignment_set_padding(GTK_ALIGNMENT(alignment), 
                              POPUP_DIALOG_V_PADDING, 
                              POPUP_DIALOG_V_PADDING, 
                              POPUP_DIALOG_H_PADDING, 
                              POPUP_DIALOG_H_PADDING);
    gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), alignment);

    // vbox
    GtkWidget* vbox = gtk_vbox_new(FALSE, POPUP_DIALOG_V_SPACING);
    gtk_container_add(GTK_CONTAINER(alignment), vbox);

    // rename_label_widget
    GtkWidget * rename_label_widget = gtk_label_new("");
    gtk_widget_set_name(rename_label_widget, "irex-normal-text");
    gtk_widget_set_size_request(rename_label_widget, 
            POPUP_DIALOG_WIDTH - 2 * POPUP_DIALOG_H_PADDING, -1);
    gtk_misc_set_alignment(GTK_MISC(rename_label_widget), 0.0, 0.0);
    gtk_label_set_justify(GTK_LABEL(rename_label_widget), GTK_JUSTIFY_LEFT);
    gtk_label_set_single_line_mode(GTK_LABEL(rename_label_widget), FALSE);
    gtk_label_set_line_wrap(GTK_LABEL(rename_label_widget), TRUE);
    gtk_label_set_ellipsize(GTK_LABEL(rename_label_widget), PANGO_ELLIPSIZE_NONE);
    gtk_box_pack_start(GTK_BOX(vbox), rename_label_widget, TRUE, TRUE, 0);
    g_rename_label = rename_label_widget;

    // hbox
    GtkWidget* hbox = gtk_hbox_new(FALSE, POPUP_DIALOG_H_SPACING);
    gtk_widget_set_size_request(hbox, -1, -1);
    gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);

    // input_entry
    GtkWidget* entry_widget = gtk_entry_new();
    gtk_widget_set_size_request(entry_widget, TEXT_ENTRY_WIDTH, TEXT_ENTRY_HEIGHT);
    gtk_entry_set_max_length(GTK_ENTRY(entry_widget), MAX_FILENAME_LEN);
    g_free(g_lastfilename);
    g_lastfilename = g_strdup(current_filename);

    if (g_lastfilename)
        gtk_entry_set_text(GTK_ENTRY(entry_widget), g_lastfilename);
    else 
        gtk_entry_set_text(GTK_ENTRY(entry_widget), "");

    gtk_box_pack_start(GTK_BOX(hbox), entry_widget, TRUE, TRUE, 0); 
    g_object_set(G_OBJECT(entry_widget), "im-context-inhibit", TRUE, NULL );
    g_object_set(G_OBJECT(entry_widget), "activates-default", TRUE, NULL );
    g_input_entry = entry_widget;

    // sub_hbox
    GtkWidget* sub_hbox = gtk_hbox_new(FALSE, POPUP_DIALOG_H_SPACING);
    gtk_box_pack_start(GTK_BOX(hbox), sub_hbox, FALSE, FALSE, 0); 

    // rename_button
    GtkWidget* button_widget = gtk_button_new();
    gtk_widget_set_size_request(button_widget, BUTTON_WIDTH, BUTTON_HEIGHT);
    gtk_box_pack_start(GTK_BOX(sub_hbox), button_widget, FALSE, FALSE, 0); 
    g_rename_button = button_widget;
    GTK_WIDGET_SET_FLAGS(g_rename_button, GTK_CAN_DEFAULT);
    gtk_window_set_default(GTK_WINDOW(dialog), g_rename_button);
    
    // cancel_button
    GtkWidget* cancel_widget = gtk_button_new();
    gtk_widget_set_size_request(cancel_widget, BUTTON_WIDTH, BUTTON_HEIGHT);
    gtk_box_pack_start(GTK_BOX(sub_hbox), cancel_widget, FALSE, FALSE, 0); 
    g_cancel_button = cancel_widget;

    // keyboard_widget
    GtkWidget* keyboard_widget = ergtk_keyb_new();
    gtk_box_pack_start(GTK_BOX(vbox), keyboard_widget, TRUE, TRUE, 10);

    // install signal hanlders.
    g_signal_connect(G_OBJECT(sub_hbox), "size-allocate",  
            G_CALLBACK(rename_on_hbox_size_allocate), sub_hbox); 
    g_signal_connect(G_OBJECT(button_widget), "clicked", 
            G_CALLBACK(rename_on_rename_button_clicked), (gpointer) dialog);
    g_signal_connect(G_OBJECT(cancel_widget), "clicked", 
            G_CALLBACK(rename_on_cancel_button_clicked), (gpointer) dialog);

    // Focus on the entry in order to show keyboard automatically.
    gtk_widget_grab_focus(g_input_entry);
    
    rename_locale_changed();

    gtk_widget_show_all(dialog);
    return dialog;
}


void rename_locale_changed()
{
    gtk_label_set_text(GTK_LABEL(g_rename_label), 
                       _("Type the new name for this note and then tap the Rename button to save it. \n"
                         " / \\ |: * ? < or > cannot be used in the name and it cannot begin with a space or period."));

    gtk_button_set_label(GTK_BUTTON(g_rename_button), _("Rename"));
    gtk_button_set_label(GTK_BUTTON(g_cancel_button), _("Cancel"));
}


const gchar* rename_get_text()
{
    LOGPRINTF("%s", g_lastfilename);
    return g_lastfilename;
}


void rename_set_focus()
{
    gtk_widget_grab_focus(g_input_entry);
}


static void rename_on_rename_button_clicked(GtkWidget * widget, gpointer data)
{
    const gchar* text = gtk_entry_get_text(GTK_ENTRY(g_input_entry));
    LOGPRINTF("%s", text);
    g_free(g_lastfilename);
    g_lastfilename = g_strdup(text);
    if (g_strcmp0(text, "") == 0) 
    {
        gtk_dialog_response(GTK_DIALOG(g_dialog), GTK_RESPONSE_CLOSE);
    } else 
    {
        gtk_dialog_response(GTK_DIALOG(g_dialog), GTK_RESPONSE_ACCEPT);
    }
}

static void rename_on_cancel_button_clicked(GtkWidget * widget, gpointer data)
{
    const gchar* text = gtk_entry_get_text(GTK_ENTRY(g_input_entry));
    LOGPRINTF("%s", text);
    g_free(g_lastfilename);
    g_lastfilename = g_strdup(text);
    gtk_dialog_response(GTK_DIALOG(g_dialog), GTK_RESPONSE_CLOSE);
}

static void rename_on_hbox_size_allocate(GtkWidget * widget,
        GtkAllocation * allocation,
        gpointer user_data)
{
    if (!user_data || !GTK_IS_HBOX(user_data))
    {
        ERRORPRINTF("Can't adjust for this widget because it's not a HBOX!");
        return;
    }

    // Get child widgets.
    GList * children = gtk_container_get_children(GTK_CONTAINER(user_data));
    if (!children)
    {
        ERRORPRINTF("The hbox hasn't any children!");
        return;
    }
    int n_children = g_list_length(children);

    // Calculate the button's width.
    int request_width = BUTTON_WIDTH;
    int index = 0;
    while (index < n_children)
    {
        gpointer gp = g_list_nth_data(children, index);
        GtkWidget * child = GTK_WIDGET(gp);
        GtkRequisition requisition;
        gtk_widget_size_request(child, &requisition);
        if (request_width < requisition.width)
        {
            request_width = requisition.width;
        }

        LOGPRINTF("index [%d] width [%d]", index, requisition.width);
        index++;
    }

    // Set the buttons's width to be the request_width.
    index = 0;
    while (index < n_children)
    {
        gpointer gp = g_list_nth_data(children, index);
        GtkWidget * child = GTK_WIDGET(gp);
        GtkRequisition requisition;
        gtk_widget_size_request(child, &requisition);
        if (requisition.width != request_width)
        {   
            gtk_widget_set_size_request(child,
                    request_width,
                    requisition.height);
        }
        index++;
    }
}