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
  67         if (item->flags & MI_CHECKED)
  68                 CheckMenuItem(windows_menu->menu, windows_menu->index,
  69                         MF_BYPOSITION | MF_CHECKED);
  70
  71         windows_menu->index++;
  72         return TRUE;
  73 }
  74
  75 void *start_submenu(struct git_data *this_, const struct menu_item *item,
  76                     void *platform)
  77 {
  78         struct windows_menu_data *parent_menu = platform;
  79         struct windows_menu_data *submenu =
  80                 malloc(sizeof(struct windows_menu_data));
  81         submenu->menu = CreateMenu();
  82         InsertMenu(parent_menu->menu, parent_menu->index,
  83                 MF_POPUP | MF_BYPOSITION, (UINT_PTR)(submenu->menu),
  84                 item->string);
  85         parent_menu->index++;
  86
  87         submenu->index = 0;
  88         submenu->first = parent_menu->first;
  89
  90         return submenu;
  91 }
  92
  93 void end_submenu(void *parent, void *submenu)
  94 {
  95         free(submenu);
  96 }
  97
  98 /*
  99  * These are the functions for handling the context menu.
 100  */
 101
 102 inline STDMETHODIMP query_context_menu(void *p, HMENU menu,
 103                                        UINT index, UINT first_command,
 104                                        UINT last_command, UINT flags)
 105 {
 106         struct git_menu *this_menu = p;
 107         struct git_data *this_ = this_menu->git_data;
 108         struct windows_menu_data windows_menu =
 109                 { menu, index, first_command, last_command };
 110
 111         if (flags & CMF_DEFAULTONLY)
 112                 return MAKE_HRESULT(SEVERITY_SUCCESS, FACILITY_NULL, 0);
 113
 114         build_cheetah_menu(this_, &windows_menu);
 115
 116         return MAKE_HRESULT(SEVERITY_SUCCESS, FACILITY_NULL,
 117                 next_active_item);
 118 }
 119
 120 /*
 121  * Perform a couple of transformations, such that a directory
 122  *    C:\Program Files\Bunch of stuff\in\A dir
 123  * becomes
 124  *    /C/Program\ Files/Bunch\ of\ stuff/in/A\ dir
 125  *
 126  * Assumes path is initially a correctly formed Windows-style path.
 127  * Returns a new string.
 128  */
 129 static char *convert_directory_format(const char *path)
 130 {
 131         int i;
 132         int size_incr = 0;
 133         char *converted;
 134         char *dst;
 135
 136         /* Figure out how much extra space we need to escape spaces */
 137         for (i = 0; i < MAX_PATH && path[i] != '\0'; ++i)
 138                 if (path[i] == ' ')
 139                         size_incr++;
 140
 141         converted = (char *)calloc(size_incr + i + 1, sizeof(char));
 142         dst = converted;
 143
 144         /* Transform:
 145          * " " -> "\ "
 146          * "\" -> "/"
 147          */
 148         for (i = 0; i < MAX_PATH && path[i] != '\0'; ++i)
 149         {
 150                 switch (path[i])
 151                 {
 152                 case ' ':
 153                         *(dst++) = '\\';
 154                         *(dst++) = ' ';
 155                         break;
 156                 case '\\':
 157                         *(dst++) = '/';
 158                         break;
 159                 default:
 160                         *(dst++) = path[i];
 161                         break;
 162                 }
 163         }
 164         *dst = '\0';
 165
 166         /* X: -> /X */
 167         converted[1] = converted[0];
 168         converted[0] = '/';
 169
 170         return converted;
 171 }
 172
 173 static void free_platform_argv(void *data)
 174 {
 175         free(data);
 176 }
 177
 178 __attribute__((unused))
 179 static const char *get_win3264_cmd(void)
 180 {
 181         static struct strbuf buf = STRBUF_INIT;
 182
 183         if (!buf.len)
 184                 strbuf_addf(&buf, "%s\\SysWOW64\\cmd.exe", getenv("WINDIR"));
 185
 186         return buf.buf;
 187 }
 188
 189 const char **menu_get_platform_argv(menu_commands cmd, const void *data,
 190                 free_func_t *free_argv, void **argv_data)
 191 {
 192         int n;
 193         const char *wd = data;
 194         const char **argv;
 195         const char *history_argv[] = { "sh", "--login", "-i",
 196                 "/bin/gitk", "HEAD", "--", NULL, NULL };
 197         /* start is required because exec_program does not create a window */
 198 #ifndef _WIN64
 199         const char *bash_argv[] = { "start", "sh", "--login",
 200                 "-i", NULL };
 201 #else
 202         const char *bash_argv[] = { NULL, "/c",
 203                 "start sh --login -i", NULL };
 204
 205         bash_argv[0] = get_win3264_cmd();
 206 #endif
 207
 208         *free_argv = NULL;
 209         *argv_data = NULL;
 210
 211         switch(cmd)
 212         {
 213                 case MENU_HISTORY:
 214                         history_argv[6] = wd;
 215
 216                         argv = xmalloc(sizeof(history_argv));
 217                         memcpy(argv, history_argv, sizeof(history_argv));
 218
 219                         break;
 220
 221                 case MENU_BASH:
 222
 223                         argv = xmalloc(sizeof(bash_argv));
 224                         memcpy(argv, bash_argv, sizeof(bash_argv));
 225
 226                         break;
 227
 228                 default:
 229                         return NULL;
 230         }
 231
 232         *free_argv = free_platform_argv;
 233         *argv_data = argv;
 234
 235         return argv;
 236 }
 237
 238 inline STDMETHODIMP invoke_command(void *p,
 239                                    LPCMINVOKECOMMANDINFO info)
 240 {
 241         struct git_menu *this_menu = p;
 242         struct git_data *this_ = this_menu->git_data;
 243         UINT id = LOWORD(info->lpVerb);
 244
 245         if (HIWORD(info->lpVerb))
 246                 return E_INVALIDARG;
 247
 248         handle_menu_item(this_, id);
 249         return S_OK;
 250 }
 251
 252 inline STDMETHODIMP get_command_string(void *p, UINT id,
 253                                        UINT flags, UINT *reserved,
 254                                        LPSTR name, UINT size)
 255 {
 256         const char *text;
 257
 258         if (!(flags & GCS_HELPTEXT))
 259                 return E_INVALIDARG;
 260
 261         text = get_menu_item_text(id);
 262         if (!text)
 263                 return E_INVALIDARG;
 264
 265         if (flags & GCS_UNICODE) {
 266                 size_t len = strlen(text) + 1;
 267                 LPWSTR tw = malloc(len * sizeof(wchar_t));
 268                 /* need to convert terminating NULL as well */
 269                 mbstowcs(tw, text, len);
 270                 lstrcpynW((LPWSTR)name, tw, size);
 271                 free(tw);
 272         } else
 273                 lstrcpynA(name, text, size);
 274
 275         return S_OK;
 276 }
 277
 278 DEFINE_STANDARD_METHODS(git_menu)
 279
 280 struct git_menu_virtual_table git_menu_virtual_table = {
 281         query_interface_git_menu,
 282         add_ref_git_menu,
 283         release_git_menu,
 284         query_context_menu,
 285         invoke_command,
 286         get_command_string
 287 };