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/* editor.c */

#include <stdlib.h>

#include "editor.h"

#include "../config.h"

/* Editor */

static GtkWidget * _new_menubar(Editor * editor);

/* callbacks */

static void _editor_on_close(GtkWidget * widget, gpointer data);

static void _editor_on_edit_preferences(GtkWidget * widget, gpointer data);

static gboolean _editor_on_exit(GtkWidget * widget, GdkEvent * event,

gpointer data);

static void _editor_on_file_close(GtkWidget * widget, gpointer data);

static void _editor_on_file_new(GtkWidget * widget, gpointer data);

static void _editor_on_file_open(GtkWidget * widget, gpointer data);

static void _editor_on_file_save(GtkWidget * widget, gpointer data);

static void _editor_on_file_save_as(GtkWidget * widget, gpointer data);

static void _editor_on_help_about(GtkWidget * widget, gpointer data);

static void _editor_on_new(GtkWidget * widget, gpointer data);

static void _editor_on_open(GtkWidget * widget, gpointer data);

struct _menu

{

char * name;

GtkSignalFunc callback;

char * stock;

};

struct _menubar

{

char * name;

struct _menu * menu;

};

struct _menu _menu_file[] =

{

{ "_New", G_CALLBACK(_editor_on_file_new), GTK_STOCK_NEW },

{ "_Open", G_CALLBACK(_editor_on_file_open), GTK_STOCK_OPEN },

{ "", NULL, NULL },

{ "_Save", G_CALLBACK(_editor_on_file_save), GTK_STOCK_SAVE },

{ "_Save as...", G_CALLBACK(_editor_on_file_save_as),

GTK_STOCK_SAVE_AS },

{ "", NULL, NULL },

{ "_Close", G_CALLBACK(_editor_on_file_close), GTK_STOCK_CLOSE },

{ NULL, NULL, NULL }

};

struct _menu _menu_edit[] =

{

{ "_Cut", NULL, GTK_STOCK_CUT },

{ "_Copy", NULL, GTK_STOCK_COPY },

{ "_Paste", NULL, GTK_STOCK_PASTE },

{ "", NULL, NULL },

{ "_Preferences", G_CALLBACK(_editor_on_edit_preferences),

GTK_STOCK_PREFERENCES },

{ NULL, NULL, NULL }

};

struct _menu _menu_help[] =

{

#if GTK_CHECK_VERSION(2, 6, 0)

{ "_About", G_CALLBACK(_editor_on_help_about), GTK_STOCK_ABOUT },

#else

{ "_About", G_CALLBACK(_editor_on_help_about), NULL },

#endif

{ NULL, NULL, NULL }

};

static struct _menubar _menubar[] =

{

{ "_File", _menu_file },

{ "_Edit", _menu_edit },

{ "_Help", _menu_help },

{ NULL, NULL }

};

Editor * editor_new(void)

{

Editor * editor;

GtkWidget * vbox;

GtkWidget * toolbar;

GtkToolItem * tb_button;

GtkWidget * widget;

if((editor = malloc(sizeof(*editor))) == NULL)

return NULL;

editor->filename = NULL;

editor->saved = 1;

/* widgets */

editor->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

gtk_window_set_default_size(GTK_WINDOW(editor->window), 512, 384);

gtk_window_set_title(GTK_WINDOW(editor->window), "Text editor");

g_signal_connect(G_OBJECT(editor->window), "delete_event", G_CALLBACK(

_editor_on_exit), editor);

vbox = gtk_vbox_new(FALSE, 0);

/* menubar */

gtk_box_pack_start(GTK_BOX(vbox), _new_menubar(editor), FALSE, FALSE,

0);

/* toolbar */

toolbar = gtk_toolbar_new();

tb_button = gtk_tool_button_new_from_stock(GTK_STOCK_NEW);

g_signal_connect(G_OBJECT(tb_button), "clicked", G_CALLBACK(

_editor_on_new), editor);

gtk_toolbar_insert(GTK_TOOLBAR(toolbar), tb_button, -1);

tb_button = gtk_tool_button_new_from_stock(GTK_STOCK_OPEN);

g_signal_connect(G_OBJECT(tb_button), "clicked", G_CALLBACK(

_editor_on_open), editor);

gtk_toolbar_insert(GTK_TOOLBAR(toolbar), tb_button, -1);

tb_button = gtk_tool_button_new_from_stock(GTK_STOCK_CLOSE);

g_signal_connect(G_OBJECT(tb_button), "clicked", G_CALLBACK(

_editor_on_close), editor);

gtk_toolbar_insert(GTK_TOOLBAR(toolbar), tb_button, -1);

gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);

/* view */

widget = gtk_scrolled_window_new(NULL, NULL);

gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(widget),

GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);

editor->view = gtk_text_view_new();

gtk_container_add(GTK_CONTAINER(widget), editor->view);

gtk_box_pack_start(GTK_BOX(vbox), widget, TRUE, TRUE, 0);

/* statusbar */

editor->statusbar = gtk_statusbar_new();

gtk_box_pack_start(GTK_BOX(vbox), editor->statusbar, FALSE, FALSE, 0);

/* preferences */

editor->pr_window = NULL;

gtk_container_add(GTK_CONTAINER(editor->window), vbox);

gtk_widget_show_all(editor->window);

return editor;

}

static GtkWidget * _new_menubar(Editor * editor)

{

GtkWidget * tb_menubar;

GtkWidget * menu;

GtkWidget * menubar;

GtkWidget * menuitem;

unsigned int i;

unsigned int j;

struct _menu * p;

tb_menubar = gtk_menu_bar_new();

for(i = 0; _menubar[i].name != NULL; i++)

{

menubar = gtk_menu_item_new_with_mnemonic(_menubar[i].name);

menu = gtk_menu_new();

for(j = 0; _menubar[i].menu[j].name != NULL; j++)

{

p = &_menubar[i].menu[j];

if(p->name[0] == '\0')

menuitem = gtk_separator_menu_item_new();

else if(p->stock == 0)

menuitem = gtk_menu_item_new_with_mnemonic(

p->name);

else

menuitem = gtk_image_menu_item_new_from_stock(

p->stock, NULL);

if(p->callback != NULL)

g_signal_connect(G_OBJECT(menuitem), "activate",

G_CALLBACK(p->callback), editor);

else

gtk_widget_set_sensitive(menuitem, FALSE);

gtk_menu_shell_append(GTK_MENU_SHELL(menu), menuitem);

}

gtk_menu_item_set_submenu(GTK_MENU_ITEM(menubar), menu);

gtk_menu_bar_append(GTK_MENU_BAR(tb_menubar), menubar);

}

return tb_menubar;

}

static int _editor_error(Editor * editor, char const * message, int ret)

{

GtkWidget * dialog;

dialog = gtk_message_dialog_new(GTK_WINDOW(editor->window),

GTK_DIALOG_DESTROY_WITH_PARENT,

GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s", message);

g_signal_connect(G_OBJECT(dialog), "response", G_CALLBACK(

gtk_widget_destroy), NULL);

gtk_widget_show(dialog);

return ret;

}

static void _editor_on_close(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

editor_close(editor);

}

static void _preferences_set(Editor * editor);

/* callbacks */

static void _preferences_on_cancel(GtkWidget * widget, gpointer data);

static gboolean _preferences_on_close(GtkWidget * widget, GdkEvent * event,

gpointer data);

static void _preferences_on_ok(GtkWidget * widget, gpointer data);

static void _editor_on_edit_preferences(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

GtkWidget * vbox;

GtkWidget * hbox;

GtkSizeGroup * group;

if(editor->pr_window != NULL)

{

gtk_widget_show(editor->pr_window);

return;

}

editor->pr_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

gtk_window_set_resizable(GTK_WINDOW(editor->pr_window), FALSE);

gtk_window_set_title(GTK_WINDOW(editor->pr_window),

"Text editor preferences");

gtk_window_set_transient_for(GTK_WINDOW(editor->pr_window), GTK_WINDOW(

editor->window));

g_signal_connect(G_OBJECT(editor->pr_window), "delete_event",

G_CALLBACK(_preferences_on_close), editor);

vbox = gtk_vbox_new(FALSE, 0);

/* dialog */

hbox = gtk_hbox_new(FALSE, 0);

group = gtk_size_group_new(GTK_SIZE_GROUP_HORIZONTAL);

widget = gtk_button_new_from_stock(GTK_STOCK_OK);

gtk_size_group_add_widget(group, widget);

g_signal_connect(G_OBJECT(widget), "clicked", G_CALLBACK(

_preferences_on_ok), editor);

gtk_box_pack_end(GTK_BOX(hbox), widget, FALSE, TRUE, 4);

widget = gtk_button_new_from_stock(GTK_STOCK_CANCEL);

gtk_size_group_add_widget(group, widget);

g_signal_connect(G_OBJECT(widget), "clicked", G_CALLBACK(

_preferences_on_cancel), editor);

gtk_box_pack_end(GTK_BOX(hbox), widget, FALSE, TRUE, 4);

gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 4);

gtk_container_add(GTK_CONTAINER(editor->pr_window), vbox);

_preferences_set(editor);

gtk_widget_show_all(editor->pr_window);

}

static void _preferences_set(Editor * editor)

{

}

static void _preferences_on_cancel(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

gtk_widget_hide(editor->pr_window);

_preferences_set(editor);

}

static gboolean _preferences_on_close(GtkWidget * widget, GdkEvent * event,

gpointer data)

{

Editor * editor = data;

_preferences_on_cancel(widget, editor);

return FALSE;

}

static void _preferences_on_ok(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

gtk_widget_hide(editor->pr_window);

/* FIXME apply settings */

}

static gboolean _editor_on_exit(GtkWidget * widget, GdkEvent * event,

gpointer data)

{

Editor * editor = data;

return editor_close(editor);

}

static void _editor_on_file_close(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

/* FIXME ask the user whether to save or not */

gtk_main_quit();

}

static void _editor_on_file_new(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

editor_open(editor, NULL);

}

static void _editor_on_file_open(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

editor_open_dialog(editor);

}

static void _editor_on_file_save(GtkWidget * widget, gpointer data)

{

}

static void _editor_on_file_save_as(GtkWidget * widget, gpointer data)

{

}

static void _editor_on_help_about(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

static GtkWidget * window = NULL;

char const * authors[] = { "Pierre 'khorben' Pronchery", NULL };

#if GTK_CHECK_VERSION(2, 6, 0)

gsize cnt = 65536;

gchar * buf;

if(window != NULL)

{

gtk_widget_show(window);

return;

}

if((buf = malloc(sizeof(*buf) * cnt)) == NULL)

{

_editor_error(editor, "malloc", 0);

return;

}

window = gtk_about_dialog_new();

gtk_about_dialog_set_name(GTK_ABOUT_DIALOG(window), PACKAGE);

gtk_about_dialog_set_version(GTK_ABOUT_DIALOG(window), VERSION);

gtk_about_dialog_set_copyright(GTK_ABOUT_DIALOG(window), copyright);

gtk_about_dialog_set_authors(GTK_ABOUT_DIALOG(window), authors);

if(g_file_get_contents("/usr/share/common-licenses/GPL-2", &buf, &cnt,

NULL) == TRUE)

gtk_about_dialog_set_license(GTK_ABOUT_DIALOG(window), buf);

else

gtk_about_dialog_set_license(GTK_ABOUT_DIALOG(window), "GPLv2");

free(buf);

gtk_widget_show(window);

#else

if(window != NULL)

{

gtk_widget_show(window);

return;

}

window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

gtk_window_set_transient(GTK_WINDOW(window),

GTK_WINDOW(editor->window));

gtk_window_set_title(GTK_WINDOW(window), "About Editor");

gtk_widget_show_all(window);

#endif

}

static void _editor_on_new(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

editor_open(editor, NULL);

}

static void _editor_on_open(GtkWidget * widget, gpointer data)

{

Editor * editor = data;

editor_open_dialog(editor);

}

void editor_delete(Editor * editor)

{

free(editor);

}

/* useful */

gboolean editor_close(Editor * editor)

{

if(editor->saved)

{

gtk_main_quit();

return FALSE;

}

/* FIXME dialog for confirmation */

return TRUE;

}

void editor_open(Editor * editor, char const * filename)

{

FILE * fp;

GtkTextBuffer * tbuf;

GtkTextIter iter;

char buf[BUFSIZ];

size_t len;

/* FIXME close previously opened file */

if(filename == NULL)

return;

if((fp = fopen(filename, "r")) == NULL)

{

_editor_error(editor, filename, 0);

return;

}

tbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(editor->view));

gtk_text_buffer_set_text(tbuf, "", 0);

while((len = fread(buf, sizeof(char), sizeof(buf), fp)) > 0)

{

gtk_text_buffer_get_end_iter(tbuf, &iter);

gtk_text_buffer_insert(tbuf, &iter, buf, len);

}

fclose(fp);

}

void editor_open_dialog(Editor * editor)

{

GtkWidget * dialog;

int ret;

char * filename;

dialog = gtk_file_chooser_dialog_new("Open file...",

GTK_WINDOW(editor->window),

GTK_FILE_CHOOSER_ACTION_OPEN, GTK_STOCK_CANCEL, 1,

GTK_STOCK_OPEN, 0, NULL);

if((ret = gtk_dialog_run(GTK_DIALOG(dialog))) == 0)

filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(

dialog));

gtk_widget_destroy(dialog);

editor_open(editor, filename);

}