explorer/menu.c

   1 #include "../common/cache.h"
   2
   3 #include <shlobj.h>
   4 #include <tchar.h>
   5 #include "../common/menuengine.h"
   6 #include "../common/cheetahmenu.h"
   7 #include "menu.h"
   8 #include "ext.h"
   9 #include "../common/debug.h"
  10 #include "../common/systeminfo.h"
  11 #include "../common/exec.h"
  12
  13 #define LONGEST_MENU_ITEM 40
  14
  15 /*
  16  * Windows-specific Cheetah menu functions
  17  */
  18 struct windows_menu_data {
  19         HMENU menu;
  20         UINT index;
  21         UINT first;
  22         UINT last;
  23 };
  24
  25 void reset_platform(void *platform)
  26 {
  27         /* On Windows, we don't do anything to reset the menu */
  28 }
  29
  30 /*
  31  * menu_item_builder to build a Windows-specific menu separator
  32  *
  33  * Always returns FALSE so the menu engine does not track this item
  34  */
  35 BOOL build_separator(struct git_data *data, const struct menu_item *item,
  36                      void *platform)
  37 {
  38         struct windows_menu_data *windows_menu = platform;
  39         InsertMenu(windows_menu->menu, windows_menu->index,
  40                 MF_SEPARATOR | MF_BYPOSITION, 0, "");
  41         windows_menu->index++;
  42
  43         return FALSE;
  44 }
  45
  46 /*
  47  * menu_item_builder to build a simple menu item
  48  *
  49  * Explorer's context menu are limited in the number of comands
  50  * that they can use, so build_item would:
  51  * - do nothing if that limit is reached and return FALSE to
  52  *   instruct the menu engine to not track this item
  53  * - create item and return TRUE, so the item can be handled later
  54  */
  55 BOOL build_item(struct git_data *data, const struct menu_item *item,
  56                 void *platform)
  57 {
  58         struct windows_menu_data *windows_menu = platform;
  59         if (windows_menu->last < windows_menu->first + next_active_item)
  60                 return FALSE;
  61
  62         InsertMenu(windows_menu->menu, windows_menu->index,
  63                 MF_STRING | MF_BYPOSITION,
  64                 windows_menu->first + next_active_item,
  65                 item->string);
  66         windows_menu->index++;
  67
  68         return TRUE;
  69 }
  70
  71 void *start_submenu(struct git_data *this_, const struct menu_item *item,
  72                     void *platform)
  73 {
  74         struct windows_menu_data *parent_menu = platform;
  75         struct windows_menu_data *submenu =
  76                 malloc(sizeof(struct windows_menu_data));
  77         submenu->menu = CreateMenu();
  78         InsertMenu(parent_menu->menu, parent_menu->index,
  79                 MF_POPUP | MF_BYPOSITION, (UINT_PTR)(submenu->menu),
  80                 item->string);
  81         parent_menu->index++;
  82
  83         submenu->index = 0;
  84         submenu->first = parent_menu->first;
  85
  86         return submenu;
  87 }
  88
  89 void end_submenu(void *parent, void *submenu)
  90 {
  91         free(submenu);
  92 }
  93
  94 void check_menu_item(void *platform, int checked)
  95 {
  96         struct windows_menu_data *submenu = platform;
  97         /* -1, because it's called __after__ index is increased */
  98         CheckMenuItem(submenu->menu, submenu->index - 1,
  99                 MF_BYPOSITION | (checked ? MF_CHECKED : 0));
 100 }
 101
 102 /*
 103  * These are the functions for handling the context menu.
 104  */
 105
 106 inline STDMETHODIMP query_context_menu(void *p, HMENU menu,
 107                                        UINT index, UINT first_command,
 108                                        UINT last_command, UINT flags)
 109 {
 110         struct git_menu *this_menu = p;
 111         struct git_data *this_ = this_menu->git_data;
 112         struct windows_menu_data windows_menu =
 113                 { menu, index, first_command, last_command };
 114
 115         if (flags & CMF_DEFAULTONLY)
 116                 return MAKE_HRESULT(SEVERITY_SUCCESS, FACILITY_NULL, 0);
 117
 118         build_cheetah_menu(this_, &windows_menu);
 119
 120         return MAKE_HRESULT(SEVERITY_SUCCESS, FACILITY_NULL,
 121                 next_active_item);
 122 }
 123
 124 /*
 125  * Perform a couple of transformations, such that a directory
 126  *    C:\Program Files\Bunch of stuff\in\A dir
 127  * becomes
 128  *    /C/Program\ Files/Bunch\ of\ stuff/in/A\ dir
 129  *
 130  * Assumes path is initially a correctly formed Windows-style path.
 131  * Returns a new string.
 132  */
 133 static char *convert_directory_format(const char *path)
 134 {
 135         int i;
 136         int size_incr = 0;
 137         char *converted;
 138         char *dst;
 139
 140         /* Figure out how much extra space we need to escape spaces */
 141         for (i = 0; i < MAX_PATH && path[i] != '\0'; ++i)
 142                 if (path[i] == ' ')
 143                         size_incr++;
 144
 145         converted = (char *)calloc(size_incr + i + 1, sizeof(char));
 146         dst = converted;
 147
 148         /* Transform:
 149          * " " -> "\ "
 150          * "\" -> "/"
 151          */
 152         for (i = 0; i < MAX_PATH && path[i] != '\0'; ++i)
 153         {
 154                 switch (path[i])
 155                 {
 156                 case ' ':
 157                         *(dst++) = '\\';
 158                         *(dst++) = ' ';
 159                         break;
 160                 case '\\':
 161                         *(dst++) = '/';
 162                         break;
 163                 default:
 164                         *(dst++) = path[i];
 165                         break;
 166                 }
 167         }
 168         *dst = '\0';
 169
 170         /* X: -> /X */
 171         converted[1] = converted[0];
 172         converted[0] = '/';
 173
 174         return converted;
 175 }
 176
 177 static void free_platform_argv(void *data)
 178 {
 179         free(data);
 180 }
 181
 182 const char **menu_get_platform_argv(menu_commands cmd, const void *data,
 183                 free_func_t *free_argv, void **argv_data)
 184 {
 185         int n;
 186         const char *wd = data;
 187         const char **argv;
 188         const char *history_argv[] = { "sh", "--login", "-i",
 189                 "/bin/gitk", "HEAD", "--", NULL, NULL };
 190         /* start is required because exec_program does not create a window */
 191         const char *bash_argv[] = { "start", "sh", "--login",
 192                 "-i", NULL };
 193
 194         *free_argv = NULL;
 195         *argv_data = NULL;
 196
 197         switch(cmd)
 198         {
 199                 case MENU_HISTORY:
 200                         history_argv[6] = wd;
 201
 202                         argv = xmalloc(sizeof(history_argv));
 203                         memcpy(argv, history_argv, sizeof(history_argv));
 204
 205                         break;
 206
 207                 case MENU_BASH:
 208
 209                         argv = xmalloc(sizeof(bash_argv));
 210                         memcpy(argv, bash_argv, sizeof(bash_argv));
 211
 212                         break;
 213
 214                 default:
 215                         return NULL;
 216         }
 217
 218         *free_argv = free_platform_argv;
 219         *argv_data = argv;
 220
 221         return argv;
 222 }
 223
 224 inline STDMETHODIMP invoke_command(void *p,
 225                                    LPCMINVOKECOMMANDINFO info)
 226 {
 227         struct git_menu *this_menu = p;
 228         struct git_data *this_ = this_menu->git_data;
 229         UINT id = LOWORD(info->lpVerb);
 230
 231         if (HIWORD(info->lpVerb))
 232                 return E_INVALIDARG;
 233
 234         handle_menu_item(this_, id);
 235         return S_OK;
 236 }
 237
 238 inline STDMETHODIMP get_command_string(void *p, UINT id,
 239                                        UINT flags, UINT *reserved,
 240                                        LPSTR name, UINT size)
 241 {
 242         const char *text;
 243
 244         if (!(flags & GCS_HELPTEXT))
 245                 return E_INVALIDARG;
 246
 247         text = get_menu_item_text(id);
 248         if (!text)
 249                 return E_INVALIDARG;
 250
 251         if (flags & GCS_UNICODE) {
 252                 size_t len = strlen(text) + 1;
 253                 LPWSTR tw = malloc(len * sizeof(wchar_t));
 254                 /* need to convert terminating NULL as well */
 255                 mbstowcs(tw, text, len);
 256                 lstrcpynW((LPWSTR)name, tw, size);
 257                 free(tw);
 258         } else
 259                 lstrcpynA(name, text, size);
 260
 261         return S_OK;
 262 }
 263
 264 DEFINE_STANDARD_METHODS(git_menu)
 265
 266 struct git_menu_virtual_table git_menu_virtual_table = {
 267         query_interface_git_menu,
 268         add_ref_git_menu,
 269         release_git_menu,
 270         query_context_menu,
 271         invoke_command,
 272         get_command_string
 273 };