Dogcows Code - chaz/openbox/blob - openbox/prompt.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    prompt.c for the Openbox window manager
   4    Copyright (c) 2008        Dana Jansens
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include "prompt.h"
  20 #include "openbox.h"
  21 #include "screen.h"
  22 #include "client.h"
  23 #include "group.h"
  24 #include "event.h"
  25 #include "obt/display.h"
  26 #include "obt/keyboard.h"
  27 #include "obt/prop.h"
  28 #include "gettext.h"
  29
  30 static GList *prompt_list = NULL;
  31
  32 /* we construct these */
  33 static RrAppearance *prompt_a_bg;
  34 static RrAppearance *prompt_a_button;
  35 static RrAppearance *prompt_a_focus;
  36 static RrAppearance *prompt_a_press;
  37 static RrAppearance *prompt_a_pfocus;
  38 /* we change the max width which would screw with others */
  39 static RrAppearance *prompt_a_msg;
  40
  41 /* sizing stuff */
  42 #define OUTSIDE_MARGIN 4
  43 #define MSG_BUTTON_SEPARATION 4
  44 #define BUTTON_SEPARATION 4
  45 #define BUTTON_VMARGIN 4
  46 #define BUTTON_HMARGIN 12
  47 #define MAX_WIDTH 400
  48
  49 static void prompt_layout(ObPrompt *self);
  50 static void render_all(ObPrompt *self);
  51 static void render_button(ObPrompt *self, ObPromptElement *e);
  52 static void prompt_resize(ObPrompt *self, gint w, gint h);
  53 static void prompt_run_callback(ObPrompt *self, gint result);
  54
  55 void prompt_startup(gboolean reconfig)
  56 {
  57     RrColor *c_button, *c_focus, *c_press, *c_pfocus;
  58
  59     /* note: this is not a copy, don't free it */
  60     prompt_a_bg = ob_rr_theme->osd_bg;
  61
  62     prompt_a_button = RrAppearanceCopy(ob_rr_theme->a_focused_unpressed_close);
  63     prompt_a_focus = RrAppearanceCopy(ob_rr_theme->a_hover_focused_close);
  64     prompt_a_press = RrAppearanceCopy(ob_rr_theme->a_focused_pressed_close);
  65     prompt_a_pfocus = RrAppearanceCopy(ob_rr_theme->a_focused_pressed_close);
  66
  67     c_button = prompt_a_button->texture[0].data.mask.color;
  68     c_focus = prompt_a_focus->texture[0].data.mask.color;
  69     c_press = prompt_a_press->texture[0].data.mask.color;
  70     c_pfocus = prompt_a_press->texture[0].data.mask.color;
  71
  72     RrAppearanceRemoveTextures(prompt_a_button);
  73     RrAppearanceRemoveTextures(prompt_a_focus);
  74     RrAppearanceRemoveTextures(prompt_a_press);
  75     RrAppearanceRemoveTextures(prompt_a_pfocus);
  76
  77     /* texture[0] is the text and texture[1-4] (for prompt_a_focus and
  78        prompt_a_pfocus) is lineart to show where keyboard focus is */
  79     RrAppearanceAddTextures(prompt_a_button, 1);
  80     RrAppearanceAddTextures(prompt_a_focus, 5);
  81     RrAppearanceAddTextures(prompt_a_press, 1);
  82     RrAppearanceAddTextures(prompt_a_pfocus, 5);
  83
  84     /* totally cheating here.. */
  85     prompt_a_button->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
  86     prompt_a_focus->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
  87     prompt_a_press->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
  88     prompt_a_pfocus->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
  89
  90     prompt_a_button->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
  91     prompt_a_focus->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
  92     prompt_a_press->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
  93     prompt_a_pfocus->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
  94
  95     prompt_a_button->texture[0].data.text.color = c_button;
  96     prompt_a_focus->texture[0].data.text.color = c_focus;
  97     prompt_a_press->texture[0].data.text.color = c_press;
  98     prompt_a_pfocus->texture[0].data.text.color = c_pfocus;
  99
 100     prompt_a_focus->texture[1].data.lineart.color = c_focus;
 101     prompt_a_focus->texture[2].data.lineart.color = c_focus;
 102     prompt_a_focus->texture[3].data.lineart.color = c_focus;
 103     prompt_a_focus->texture[4].data.lineart.color = c_focus;
 104
 105     prompt_a_pfocus->texture[1].data.lineart.color = c_press;
 106     prompt_a_pfocus->texture[2].data.lineart.color = c_press;
 107     prompt_a_pfocus->texture[3].data.lineart.color = c_press;
 108     prompt_a_pfocus->texture[4].data.lineart.color = c_press;
 109
 110     prompt_a_msg = RrAppearanceCopy(ob_rr_theme->osd_hilite_label);
 111     prompt_a_msg->texture[0].data.text.flow = TRUE;
 112
 113     if (reconfig) {
 114         GList *it;
 115         for (it = prompt_list; it; it = g_list_next(it)) {
 116             ObPrompt *p = it->data;
 117             prompt_layout(p);
 118             render_all(p);
 119         }
 120     }
 121 }
 122
 123 void prompt_shutdown(gboolean reconfig)
 124 {
 125     GList *it;
 126
 127     if (!reconfig) {
 128         for (it = prompt_list; it; it = g_list_next(it)) {
 129             ObPrompt *p = it->data;
 130             if (p->cleanup) p->cleanup(p, p->data);
 131         }
 132
 133         g_assert(prompt_list == NULL);
 134     }
 135
 136     RrAppearanceFree(prompt_a_button);
 137     RrAppearanceFree(prompt_a_focus);
 138     RrAppearanceFree(prompt_a_press);
 139     RrAppearanceFree(prompt_a_pfocus);
 140     RrAppearanceFree(prompt_a_msg);
 141 }
 142
 143 ObPrompt* prompt_new(const gchar *msg, const gchar *title,
 144                      const ObPromptAnswer *answers, gint n_answers,
 145                      gint default_result, gint cancel_result,
 146                      ObPromptCallback func, ObPromptCleanup cleanup,
 147                      gpointer data)
 148 {
 149     ObPrompt *self;
 150     XSetWindowAttributes attrib;
 151     gint i;
 152
 153     attrib.override_redirect = FALSE;
 154
 155     self = g_new0(ObPrompt, 1);
 156     self->ref = 1;
 157     self->func = func;
 158     self->cleanup = cleanup;
 159     self->data = data;
 160     self->default_result = default_result;
 161     self->cancel_result = cancel_result;
 162     self->super.type = OB_WINDOW_CLASS_PROMPT;
 163     self->super.window = XCreateWindow(obt_display, obt_root(ob_screen),
 164                                        0, 0, 1, 1, 0,
 165                                        CopyFromParent, InputOutput,
 166                                        CopyFromParent,
 167                                        CWOverrideRedirect,
 168                                        &attrib);
 169     self->ic = obt_keyboard_context_new(self->super.window,
 170                                         self->super.window);
 171
 172     /* make it a dialog type window */
 173     OBT_PROP_SET32(self->super.window, NET_WM_WINDOW_TYPE, ATOM,
 174                    OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_DIALOG));
 175
 176     /* set the window's title */
 177     if (title)
 178         OBT_PROP_SETS(self->super.window, NET_WM_NAME, utf8, title);
 179
 180     /* listen for key presses on the window */
 181     self->event_mask = KeyPressMask;
 182
 183     /* set up the text message widow */
 184     self->msg.text = g_strdup(msg);
 185     self->msg.window = XCreateWindow(obt_display, self->super.window,
 186                                      0, 0, 1, 1, 0,
 187                                      CopyFromParent, InputOutput,
 188                                      CopyFromParent, 0, NULL);
 189     XMapWindow(obt_display, self->msg.window);
 190
 191     /* set up the buttons from the answers */
 192
 193     self->n_buttons = n_answers;
 194     if (!self->n_buttons)
 195         self->n_buttons = 1;
 196
 197     self->button = g_new0(ObPromptElement, self->n_buttons);
 198
 199     if (n_answers == 0) {
 200         g_assert(self->n_buttons == 1); /* should be set to this above.. */
 201         self->button[0].text = g_strdup(_("OK"));
 202     }
 203     else {
 204         g_assert(self->n_buttons > 0);
 205         for (i = 0; i < self->n_buttons; ++i) {
 206             self->button[i].text = g_strdup(answers[i].text);
 207             self->button[i].result = answers[i].result;
 208         }
 209     }
 210
 211     for (i = 0; i < self->n_buttons; ++i) {
 212         self->button[i].window = XCreateWindow(obt_display, self->super.window,
 213                                                0, 0, 1, 1, 0,
 214                                                CopyFromParent, InputOutput,
 215                                                CopyFromParent, 0, NULL);
 216         XMapWindow(obt_display, self->button[i].window);
 217         window_add(&self->button[i].window, PROMPT_AS_WINDOW(self));
 218
 219         /* listen for button presses on the buttons */
 220         XSelectInput(obt_display, self->button[i].window,
 221                      ButtonPressMask | ButtonReleaseMask | ButtonMotionMask);
 222     }
 223
 224     prompt_list = g_list_prepend(prompt_list, self);
 225
 226     return self;
 227 }
 228
 229 void prompt_ref(ObPrompt *self)
 230 {
 231     ++self->ref;
 232 }
 233
 234 void prompt_unref(ObPrompt *self)
 235 {
 236     if (self && --self->ref == 0) {
 237         gint i;
 238
 239         if (self->mapped)
 240             prompt_hide(self);
 241
 242         prompt_list = g_list_remove(prompt_list, self);
 243
 244         obt_keyboard_context_unref(self->ic);
 245
 246         for (i = 0; i < self->n_buttons; ++i) {
 247             window_remove(self->button[i].window);
 248             XDestroyWindow(obt_display, self->button[i].window);
 249         }
 250
 251         XDestroyWindow(obt_display, self->msg.window);
 252         XDestroyWindow(obt_display, self->super.window);
 253         g_free(self);
 254     }
 255 }
 256
 257 static void prompt_layout(ObPrompt *self)
 258 {
 259     gint l, r, t, b;
 260     gint i;
 261     gint allbuttonsw, allbuttonsh, buttonx;
 262     gint w, h;
 263     gint maxw;
 264
 265     RrMargins(prompt_a_bg, &l, &t, &r, &b);
 266     l += OUTSIDE_MARGIN;
 267     t += OUTSIDE_MARGIN;
 268     r += OUTSIDE_MARGIN;
 269     b += OUTSIDE_MARGIN;
 270
 271     {
 272         Rect *area = screen_physical_area_all_monitors();
 273         maxw = MIN(MAX_WIDTH, area->width*4/5);
 274         g_free(area);
 275     }
 276
 277     /* find the button sizes and how much space we need for them */
 278     allbuttonsw = allbuttonsh = 0;
 279     for (i = 0; i < self->n_buttons; ++i) {
 280         gint bw, bh;
 281
 282         prompt_a_button->texture[0].data.text.string = self->button[i].text;
 283         prompt_a_focus->texture[0].data.text.string = self->button[i].text;
 284         prompt_a_press->texture[0].data.text.string = self->button[i].text;
 285         prompt_a_pfocus->texture[0].data.text.string = self->button[i].text;
 286         RrMinSize(prompt_a_button, &bw, &bh);
 287         self->button[i].width = bw;
 288         self->button[i].height = bh;
 289         RrMinSize(prompt_a_focus, &bw, &bh);
 290         self->button[i].width = MAX(self->button[i].width, bw);
 291         self->button[i].height = MAX(self->button[i].height, bh);
 292         RrMinSize(prompt_a_press, &bw, &bh);
 293         self->button[i].width = MAX(self->button[i].width, bw);
 294         self->button[i].height = MAX(self->button[i].height, bh);
 295         RrMinSize(prompt_a_pfocus, &bw, &bh);
 296         self->button[i].width = MAX(self->button[i].width, bw);
 297         self->button[i].height = MAX(self->button[i].height, bh);
 298
 299         self->button[i].width += BUTTON_HMARGIN * 2;
 300         self->button[i].height += BUTTON_VMARGIN * 2;
 301
 302         allbuttonsw += self->button[i].width + (i > 0 ? BUTTON_SEPARATION : 0);
 303         allbuttonsh = MAX(allbuttonsh, self->button[i].height);
 304     }
 305
 306     self->msg_wbound = MAX(allbuttonsw, maxw);
 307
 308     /* measure the text message area */
 309     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 310     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 311     RrMinSize(prompt_a_msg, &self->msg.width, &self->msg.height);
 312
 313     /* width and height inside the outer margins */
 314     w = MAX(self->msg.width, allbuttonsw);
 315     h = self->msg.height + MSG_BUTTON_SEPARATION + allbuttonsh;
 316
 317     /* position the text message */
 318     self->msg.x = l + (w - self->msg.width) / 2;
 319     self->msg.y = t;
 320
 321     /* position the button buttons on the right of the dialog */
 322     buttonx = l + w;
 323     for (i = self->n_buttons - 1; i >= 0; --i) {
 324         self->button[i].x = buttonx - self->button[i].width;
 325         buttonx -= self->button[i].width + BUTTON_SEPARATION;
 326         self->button[i].y = t + h - allbuttonsh;
 327         self->button[i].y += (allbuttonsh - self->button[i].height) / 2;
 328     }
 329
 330     /* size and position the toplevel window */
 331     prompt_resize(self, w + l + r, h + t + b);
 332
 333     /* move and resize the internal windows */
 334     XMoveResizeWindow(obt_display, self->msg.window,
 335                       self->msg.x, self->msg.y,
 336                       self->msg.width, self->msg.height);
 337     for (i = 0; i < self->n_buttons; ++i)
 338         XMoveResizeWindow(obt_display, self->button[i].window,
 339                           self->button[i].x, self->button[i].y,
 340                           self->button[i].width, self->button[i].height);
 341 }
 342
 343 static void prompt_resize(ObPrompt *self, gint w, gint h)
 344 {
 345     XConfigureRequestEvent req;
 346     XSizeHints hints;
 347
 348     self->width = w;
 349     self->height = h;
 350
 351     /* the user can't resize the prompt */
 352     hints.flags = PMinSize | PMaxSize;
 353     hints.min_width = hints.max_width = w;
 354     hints.min_height = hints.max_height = h;
 355     XSetWMNormalHints(obt_display, self->super.window, &hints);
 356
 357     if (self->mapped) {
 358         /* send a configure request like a normal client would */
 359         req.type = ConfigureRequest;
 360         req.display = obt_display;
 361         req.parent = obt_root(ob_screen);
 362         req.window = self->super.window;
 363         req.width = w;
 364         req.height = h;
 365         req.value_mask = CWWidth | CWHeight;
 366         XSendEvent(req.display, req.window, FALSE, StructureNotifyMask,
 367                    (XEvent*)&req);
 368     }
 369     else
 370         XResizeWindow(obt_display, self->super.window, w, h);
 371 }
 372
 373 static void setup_button_focus_tex(ObPromptElement *e, RrAppearance *a,
 374                                    gboolean on)
 375 {
 376     gint i, l, r, t, b;
 377
 378     for (i = 1; i < 5; ++i)
 379         a->texture[i].type = on ? RR_TEXTURE_LINE_ART : RR_TEXTURE_NONE;
 380
 381     if (!on) return;
 382
 383     RrMargins(a, &l, &t, &r, &b);
 384     l += MIN(BUTTON_HMARGIN, BUTTON_VMARGIN) / 2;
 385     r += MIN(BUTTON_HMARGIN, BUTTON_VMARGIN) / 2;
 386     t += MIN(BUTTON_HMARGIN, BUTTON_VMARGIN) / 2;
 387     b += MIN(BUTTON_HMARGIN, BUTTON_VMARGIN) / 2;
 388
 389     /* top line */
 390     a->texture[1].data.lineart.x1 = l;
 391     a->texture[1].data.lineart.x2 = e->width - r - 1;
 392     a->texture[1].data.lineart.y1 = t;
 393     a->texture[1].data.lineart.y2 = t;
 394
 395     /* bottom line */
 396     a->texture[2].data.lineart.x1 = l;
 397     a->texture[2].data.lineart.x2 = e->width - r - 1;
 398     a->texture[2].data.lineart.y1 = e->height - b - 1;
 399     a->texture[2].data.lineart.y2 = e->height - b - 1;
 400
 401     /* left line */
 402     a->texture[3].data.lineart.x1 = l;
 403     a->texture[3].data.lineart.x2 = l;
 404     a->texture[3].data.lineart.y1 = t;
 405     a->texture[3].data.lineart.y2 = e->height - b - 1;
 406
 407     /* right line */
 408     a->texture[4].data.lineart.x1 = e->width - r - 1;
 409     a->texture[4].data.lineart.x2 = e->width - r - 1;
 410     a->texture[4].data.lineart.y1 = t;
 411     a->texture[4].data.lineart.y2 = e->height - b - 1;
 412 }
 413
 414 static void render_button(ObPrompt *self, ObPromptElement *e)
 415 {
 416     RrAppearance *a;
 417
 418     if (e->hover && self->focus == e) a = prompt_a_pfocus;
 419     else if (self->focus == e)        a = prompt_a_focus;
 420     else if (e->pressed)              a = prompt_a_press;
 421     else                              a = prompt_a_button;
 422
 423     a->surface.parent = prompt_a_bg;
 424     a->surface.parentx = e->x;
 425     a->surface.parenty = e->y;
 426
 427     /* draw the keyfocus line */
 428     if (a == prompt_a_pfocus || a == prompt_a_focus)
 429         setup_button_focus_tex(e, a, TRUE);
 430
 431     a->texture[0].data.text.string = e->text;
 432     RrPaint(a, e->window, e->width, e->height);
 433
 434     /* turn off the keyfocus line so that it doesn't affect size calculations
 435      */
 436     if (a == prompt_a_pfocus || a == prompt_a_focus)
 437         setup_button_focus_tex(e, a, FALSE);
 438 }
 439
 440 static void render_all(ObPrompt *self)
 441 {
 442     gint i;
 443
 444     RrPaint(prompt_a_bg, self->super.window, self->width, self->height);
 445
 446     prompt_a_msg->surface.parent = prompt_a_bg;
 447     prompt_a_msg->surface.parentx = self->msg.x;
 448     prompt_a_msg->surface.parenty = self->msg.y;
 449
 450     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 451     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 452     RrPaint(prompt_a_msg, self->msg.window, self->msg.width, self->msg.height);
 453
 454     for (i = 0; i < self->n_buttons; ++i)
 455         render_button(self, &self->button[i]);
 456 }
 457
 458 void prompt_show(ObPrompt *self, ObClient *parent, gboolean modal)
 459 {
 460     gint i;
 461
 462     if (self->mapped) {
 463         /* activate the prompt */
 464         OBT_PROP_MSG(ob_screen, self->super.window, NET_ACTIVE_WINDOW,
 465                      1, /* from an application.. */
 466                      event_curtime,
 467                      0,
 468                      0, 0);
 469         return;
 470     }
 471
 472     /* set the focused button (if not found then the first button is used) */
 473     self->focus = &self->button[0];
 474     for (i = 0; i < self->n_buttons; ++i)
 475         if (self->button[i].result == self->default_result) {
 476             self->focus = &self->button[i];
 477             break;
 478         }
 479
 480     if (parent) {
 481         Atom states[1];
 482         gint nstates;
 483         Window p;
 484         XWMHints h;
 485
 486         if (parent->group) {
 487             /* make it transient for the window's group */
 488             h.flags = WindowGroupHint;
 489             h.window_group = parent->group->leader;
 490             p = obt_root(ob_screen);
 491         }
 492         else {
 493             /* make it transient for the window directly */
 494             h.flags = 0;
 495             p = parent->window;
 496         }
 497
 498         XSetWMHints(obt_display, self->super.window, &h);
 499         OBT_PROP_SET32(self->super.window, WM_TRANSIENT_FOR, WINDOW, p);
 500
 501         states[0] = OBT_PROP_ATOM(NET_WM_STATE_MODAL);
 502         nstates = (modal ? 1 : 0);
 503         OBT_PROP_SETA32(self->super.window, NET_WM_STATE, ATOM,
 504                         states, nstates);
 505     }
 506     else
 507         OBT_PROP_ERASE(self->super.window, WM_TRANSIENT_FOR);
 508
 509     /* set up the dialog and render it */
 510     prompt_layout(self);
 511     render_all(self);
 512
 513     client_manage(self->super.window, self);
 514
 515     self->mapped = TRUE;
 516 }
 517
 518 void prompt_hide(ObPrompt *self)
 519 {
 520     XUnmapWindow(obt_display, self->super.window);
 521     self->mapped = FALSE;
 522 }
 523
 524 gboolean prompt_key_event(ObPrompt *self, XEvent *e)
 525 {
 526     gboolean shift;
 527     guint shift_mask, mods;
 528
 529     if (e->type != KeyPress) return FALSE;
 530
 531     shift_mask = obt_keyboard_modkey_to_modmask(OBT_KEYBOARD_MODKEY_SHIFT);
 532     mods = obt_keyboard_only_modmasks(e->xkey.state);
 533     shift = !!(mods & shift_mask);
 534
 535     /* only accept shift */
 536     if (mods != 0 && mods != shift_mask)
 537         return FALSE;
 538
 539     if (ob_keycode_match(e->xkey.keycode, OB_KEY_ESCAPE))
 540         prompt_cancel(self);
 541     else if (ob_keycode_match(e->xkey.keycode, OB_KEY_RETURN) ||
 542              ob_keycode_match(e->xkey.keycode, OB_KEY_SPACE))
 543     {
 544         prompt_run_callback(self, self->focus->result);
 545     }
 546     else if (ob_keycode_match(e->xkey.keycode, OB_KEY_TAB) ||
 547              ob_keycode_match(e->xkey.keycode, OB_KEY_LEFT) ||
 548              ob_keycode_match(e->xkey.keycode, OB_KEY_RIGHT))
 549     {
 550         gint i;
 551         gboolean left;
 552         ObPromptElement *oldfocus;
 553
 554         left = ob_keycode_match(e->xkey.keycode, OB_KEY_LEFT) ||
 555             (ob_keycode_match(e->xkey.keycode, OB_KEY_TAB) && shift);
 556         oldfocus = self->focus;
 557
 558         for (i = 0; i < self->n_buttons; ++i)
 559             if (self->focus == &self->button[i]) break;
 560         i += (left ? -1 : 1);
 561         if (i < 0) i = self->n_buttons - 1;
 562         else if (i >= self->n_buttons) i = 0;
 563         self->focus = &self->button[i];
 564
 565         if (oldfocus != self->focus) render_button(self, oldfocus);
 566         render_button(self, self->focus);
 567     }
 568     return TRUE;
 569 }
 570
 571 gboolean prompt_mouse_event(ObPrompt *self, XEvent *e)
 572 {
 573     gint i;
 574     ObPromptElement *but;
 575
 576     if (e->type != ButtonPress && e->type != ButtonRelease &&
 577         e->type != MotionNotify) return FALSE;
 578
 579     /* find the button */
 580     but = NULL;
 581     for (i = 0; i < self->n_buttons; ++i)
 582         if (self->button[i].window ==
 583             (e->type == MotionNotify ? e->xmotion.window : e->xbutton.window))
 584         {
 585             but = &self->button[i];
 586             break;
 587         }
 588     if (!but) return FALSE;
 589
 590     if (e->type == ButtonPress) {
 591         ObPromptElement *oldfocus;
 592
 593         oldfocus = self->focus;
 594
 595         but->pressed = but->hover = TRUE;
 596         self->focus = but;
 597
 598         if (oldfocus != but) render_button(self, oldfocus);
 599         render_button(self, but);
 600     }
 601     else if (e->type == ButtonRelease) {
 602         if (but->hover)
 603             prompt_run_callback(self, but->result);
 604         but->pressed = FALSE;
 605     }
 606     else if (e->type == MotionNotify) {
 607         if (but->pressed) {
 608             gboolean hover;
 609
 610             hover = (e->xmotion.x >= 0 && e->xmotion.y >= 0 &&
 611                      e->xmotion.x < but->width && e->xmotion.y < but->height);
 612
 613             if (hover != but->hover) {
 614                 but->hover = hover;
 615                 render_button(self, but);
 616             }
 617         }
 618     }
 619     return TRUE;
 620 }
 621
 622 void prompt_cancel(ObPrompt *self)
 623 {
 624     prompt_run_callback(self, self->cancel_result);
 625 }
 626
 627 static gboolean prompt_show_message_cb(ObPrompt *p, int res, gpointer data)
 628 {
 629     return TRUE; /* call the cleanup func */
 630 }
 631
 632 static void prompt_show_message_cleanup(ObPrompt *p, gpointer data)
 633 {
 634     prompt_unref(p);
 635 }
 636
 637 ObPrompt* prompt_show_message(const gchar *msg, const gchar *title,
 638                               const gchar *answer)
 639 {
 640     ObPrompt *p;
 641     ObPromptAnswer ans[] = {
 642         { answer, 0 }
 643     };
 644
 645     p = prompt_new(msg, title, ans, 1, 0, 0,
 646                    prompt_show_message_cb, prompt_show_message_cleanup, NULL);
 647     prompt_show(p, NULL, FALSE);
 648     return p;
 649 }
 650
 651 static void prompt_run_callback(ObPrompt *self, gint result)
 652 {
 653     prompt_ref(self);
 654     if (self->func) {
 655         gboolean clean = self->func(self, self->focus->result, self->data);
 656         if (clean && self->cleanup)
 657             self->cleanup(self, self->data);
 658     }
 659     prompt_hide(self);
 660     prompt_unref(self);
 661 }