todo.c

uclinux 下写的一个 todo 程序

/*
 *  Copyright (C) 2000 EmSoft Limited (www.emsoftltd.com)
 *
 *  <Description of the file>
 *
 */

#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "emtk.h"

#include "glib.h"

#include "laf/laf.h"
#include "db.h"

#include "glist_stable.h"

#include "todo.h"
#include "todo_record.h"
#include "i18n.h"

#include "date_chooser.h"

#ifdef FONT_TABLE
    #include "font_table.h"
#else
    #define lookupFont(a, b) (FONT1)
    #define init_font_table(a)
    #define unload_font_table()
#endif

#ifdef LAUNCHER_SUPPORT
    #include "deskmsg.h"
#endif

#define TABLE_ROW_HEIGHT 20

typedef struct {
    int cbid;
    int pbid;
    int eid;
    int dbid;
} ListWidgets;

enum { ACTION_DELETE_ITEM, ACTION_PURGE_ITEM };
enum { TABLE_COL_COMPLETED = 0, TABLE_COL_PRIORITY, TABLE_COL_TITLE, TABLE_COL_DUEDATE };
enum { DUE_DAY_TODAY = 0, DUE_DAY_TOMORROW, DUE_DAY_ONE_WEEK_LATER, DUE_DAY_NO_DATE, DUE_DAY_CHOOSE_DATE };

static int db;
static int todo_window, table_id, priority_menu, current_row, t_window, due_date_menu, confirm_dialog, purge_dialog;
static int last_priority;

enum { SHORTCUT_BUTTON_ENGLISH, SHORTCUT_BUTTON_CHINESE, SHORTCUT_BUTTON_THAI, SHORTCUT_BUTTON_HANDWRITE, SHORTCUT_BUTTON_KEYBOARD };

static int ime_state = 0, last_ime = 0;
static int ime_english, ime_chinese, ime_thai, ime_handwrite, ime_keyboard;
static int toolbar_id;

static GList *list, *table_widgets;
static Todo *selected;

static void ime_message(int code);

static void todo_ime_activate (int flag)
{
#ifdef LAUNCHER_SUPPORT
    DESKTOP_CHANNEL channel;
    MSG msg;
    int msgLen;
   
	msgLen = msg_command_input_control(
					        (flag) ?
							MSG_COMMAND_INPUT_ACTIVATE :
							MSG_COMMAND_INPUT_DEACTIVATE,
							&msg);

	desktop_channel_connect_specified_channel_name(&channel, "/tmp/ime");
	desktop_channel_send(&channel, &msg, msgLen);
	desktop_channel_disconnect(&channel);	
#endif
}
		

static void entryValChanged(int entry, void *data, void *userData) {
    char buffer[100];
    
    if (selected) {
        g_free(selected->title);
        emtk_entry_get_value(entry, buffer, 100);
        selected->title = g_strdup(buffer);
        
        selected->dirty = TRUE;
    }
    
    printf("%s\n", __FUNCTION__);
    
}

static gint todoListSortPriority(gconstpointer a, gconstpointer b) {
    Todo *todo1, *todo2;
    todo1 = TODO(a);
    todo2 = TODO(b);
    
    return todo1->priority - todo2->priority;
}

#define DATE_FORMAT_OVERDUE "%d/%m!"
#define DATE_FORMAT         "%d/%m"
#define DATE_STR_BUFFER_LEN 7
#define DATE_NONDUE_COLOR   "#000000"
#define DATE_DUE_COLOR      "#ff0000"

static void set_properties(int row, Todo *todo) {
    ListWidgets *widgets;
    char *priorityStr, *dateStr;
    GDate *now, *dueDate;
    
    widgets = (ListWidgets *) g_list_nth_data(table_widgets, row);
    
    now = g_date_new();
    dueDate = g_date_new();
    g_date_set_time(now, time(NULL));
    
    if (widgets) {
        emtk_checkbox_set_state(widgets->cbid, todo->completed);
        
        priorityStr = g_strdup_printf("%d", todo->priority);
        emtk_button_set_string(widgets->pbid, priorityStr);
        g_free(priorityStr);
        
        emtk_entry_set_value(widgets->eid, todo->title, strlen(todo->title));
        
        if (todo->dueDate > 0) {
            g_date_set_time(dueDate, todo->dueDate);
            
            dateStr = g_new0(char, DATE_STR_BUFFER_LEN);
            
            if (g_date_compare(now, dueDate) > 0) {
                g_date_strftime(dateStr, DATE_STR_BUFFER_LEN, DATE_FORMAT_OVERDUE, dueDate);
                emtk_button_set_foreground_color(widgets->dbid, DATE_DUE_COLOR);
            } else {
                g_date_strftime(dateStr, DATE_STR_BUFFER_LEN, DATE_FORMAT, dueDate);
                emtk_button_set_foreground_color(widgets->dbid, DATE_NONDUE_COLOR);
            }
        } else {
            dateStr = g_strdup("--");
            emtk_button_set_foreground_color(widgets->dbid, DATE_NONDUE_COLOR);
        }
        
        emtk_button_set_string(widgets->dbid, dateStr);
        
        g_free(dateStr);
        
        g_date_free(now);
        g_date_free(dueDate);
    }
}

static void update_table() {
    int i;
    Todo *todo;
    
    for (i = 0; i < g_list_length(list); i++) {
        
        todo = TODO(g_list_nth_data(list, i));
        set_properties(i, todo);
    }
    
    emtk_window_redraw(t_window);
}

static void tableSelectionHandler(int tid, void *data, int row) {
    
    selected = TODO(g_list_nth_data(list, row));
    
    current_row = row;
    
}

static void prioritySelectionHandler(int mid, void *data, int row) {
    
    if (selected) {
        
        if (selected->priority != row + 1) {
            
            selected->priority = row + 1;
            selected->dirty = TRUE;
            
            list = g_list_sort_stable(list, todoListSortPriority);
            
            update_table();
        }
    }
    
    emtk_menu_hide(priority_menu);
}

static void dcHandler(long time) {
    selected->dueDate = time;
    set_properties(current_row, selected);
}

static void deleteSelectedItem() {
    void *item;
    int length;
    
    g_return_if_fail(selected != NULL);
    list = g_list_remove(list, selected);
    
    item = g_list_nth_data(table_widgets, current_row);
    table_widgets = g_list_remove(table_widgets, item);
    
    todo_record_delete(db, selected);
    
    emtk_table_remove_row(table_id, current_row, TRUE);
    
    g_free(selected->title);
    g_free(selected);
    
    length = g_list_length(list);
    
    if (length > 0) {
        if (current_row > length - 1)
            current_row = length - 1;
        selected = TODO(g_list_nth_data(list, current_row));
    } else {
        current_row = 0;
        selected = NULL;
    }
    
    emtk_table_set_focus(table_id, current_row);
}

static void drawDialog(int window, WindowRect *rect) {
    emtk_window_add_object(window, 
        emtk_label_new(window, 20, 30, lookupFont("en_US", MEDIUM_FONT), 
						FALSE, _("Delete selected To Do item?")));
}

static void confirmDialogHandler(int button, int response) {
    switch(response) {
        case EMTK_DIALOG_OK:
            deleteSelectedItem();
            break;
        case EMTK_DIALOG_CANCEL:
            // do nothing
            break;
    }
    
    emtk_app_close_window(confirm_dialog);
}


static void deleteBtnHandler(int id, void *data) {
    WindowRect rect;
   
	if (emtk_table_get_num_rows (table_id) <= 0)   	
		return ;
    rect.x = APP_WINDOW_X;
    rect.y = APP_WINDOW_Y + (APP_WINDOW_H-DEL_WIN_H) * 5 / 7;
    rect.w = APP_WINDOW_W;
    rect.h = DEL_WIN_H;
    
    confirm_dialog = emtk_app_dialog_new(_("Delete To Do"), 
										lookupFont("en_US", MEDIUM_FONT), 
										lookupFont("en_US", SMALL_FONT), 
										drawDialog, 
								        EMTK_DIALOG_OK | EMTK_DIALOG_CANCEL, 
										&rect, confirmDialogHandler, NULL);
    
}

#define DAY 60 * 60 * 24

static void dueDateSelectionHandler(int mid, void *data, int row) {
    long now;
    WindowRect rect;

    rect.x = APP_WINDOW_X;
    rect.y = APP_WINDOW_Y;
    rect.w = DATE_CHOOSER_W;	//APP_WINDOW_W;
    rect.h = DATE_CHOOSER_H;	//APP_WINDOW_H;
	printf ("**** w %d h %d *****\n", rect.w, rect.h);	
    g_return_if_fail(selected != NULL);
    
    now = time(NULL);
    emtk_menu_hide(due_date_menu);
    
    switch(row) {
        case DUE_DAY_TODAY:
            selected->dueDate = now;
            break;
        case DUE_DAY_TOMORROW:
            selected->dueDate = now + DAY;
            break;
        case DUE_DAY_ONE_WEEK_LATER:
            selected->dueDate = now + DAY * 6;
            break;
        case DUE_DAY_NO_DATE:
            selected->dueDate = NO_DUE_DATE;
            break;
        case DUE_DAY_CHOOSE_DATE:
            if (selected->dueDate == NO_DUE_DATE)
                selected->dueDate = time(NULL);
            date_chooser_new(_("Due Date"), &rect, selected->dueDate, dcHandler);
            break;
        default:
            g_warning("A undefined row from menu is selected\n");
    }
    
    selected->dirty = TRUE;
    
    set_properties(current_row, selected);
    
}

static void priorityButtonHandler(int bid, void *data) {
    if (selected)
        emtk_menu_set_focus(priority_menu, selected->priority - 1);
    emtk_menu_show(priority_menu);
}

static void dueDateBtnHandler(int id, void *data) {
    if (selected) {
        if (selected->dueDate > 0)
            emtk_menu_set_focus(due_date_menu, DUE_DAY_CHOOSE_DATE);
        else
            emtk_menu_set_focus(due_date_menu, DUE_DAY_NO_DATE);
        
        emtk_menu_show(due_date_menu);
    }
}

static void checkboxHandler(int id, void *data) {
    
    if (selected) {
        selected->completed = !selected->completed;
        selected->dirty = TRUE;
    }
}

static void closeHandler(int id, void *data) {
    GList *item;
    Todo *todo;
    
    ime_message(0);
    
    for (item = list; item != NULL; item = g_list_next(item)) {
        todo = TODO(item->data);
        
        if (todo && todo->dirty) {
            todo_record_save(db, todo);
        }
        
        g_free(todo->title);
        g_free(todo);
    }
    
    g_list_free(list);
    g_list_free(table_widgets);

#ifdef LAUNCHER_SUPPORT
	todo_ime_activate (FALSE);
#endif

    emtk_app_close();
}

static int newTableRow() {
    ListWidgets *widgets;
    
    widgets = g_new0(ListWidgets, 1);
    
    widgets->cbid = emtk_table_append_checkbox_new(table_id, FONT1, "box_checked.png", "box_blank.png", "", 0, checkboxHandler, NULL, TABLE_COL_COMPLETED);
    widgets->pbid = emtk_table_append_button_new(table_id, 20, 18, FONT2, "1", 0, priorityButtonHandler, NULL, TABLE_COL_PRIORITY);
    emtk_button_set_border_width(widgets->pbid, 0);
    widgets->eid  = emtk_entry_new(t_window, 0, 12, 0, KEY_TYPE_ANY, APP_WINDOW_W - 108, 50, FONT1, FONT1, NULL);
	emtk_entry_set_sensitive(widgets->eid, TRUE);

    emtk_entry_set_value_change_callback(widgets->eid, entryValChanged, NULL);
    emtk_table_append_entry(table_id, widgets->eid, TABLE_COL_TITLE);
    //emtk_entry_set_sensitive(widgets->eid, TRUE);
    widgets->dbid = emtk_table_append_button_new(table_id, 50, 20, FONT2, "--", 0, dueDateBtnHandler, NULL, TABLE_COL_DUEDATE);

    table_widgets = g_list_append(table_widgets, widgets);
    
    return emtk_table_get_num_rows(table_id);