enable/disable back/next as needed. allow pages to do it too.

SVN revision: 31743

data/themes/default_wizard.edc

@@ -109,6 +109,7 @@ group {
 	 mouse_events: 1;
 	 description {
 	    state: "default" 0.0;
+	    visible: 0;
 	    align: 0.0 1.0;
 	    rel1 {
 	       to: "e.button.back.label";
@@ -125,9 +126,15 @@ group {
 	       border: 7 7 7 7;
 	    }
 	 }
+	 description {
+	    state: "visible" 0.0;
+	    inherit: "default" 0.0;
+	    visible: 1;
+	 }
 	 description {
 	    state: "clicked" 0.0;
 	    inherit: "default" 0.0;
+	    visible: 1;
 	    image {
 	       normal: "e17_wiz_b2.png";
 	    }
@@ -140,6 +147,7 @@ group {
 	 mouse_events:  0;
 	 description {
 	    state:    "default" 0.0;
+	    visible: 0;
 	    rel1 {
 	       relative: 0.0 1.0;
 	       offset: 16 -17;
@@ -160,9 +168,17 @@ group {
 	       text_class: "wizard_button";
 	    }
 	 }
+	 description {
+	    state: "visible" 0.0;
+	    inherit: "default" 0.0;
+	    visible: 1;
+	    color: 255 255 255 255;
+	    color3: 0 0 0 8;
+	 }
 	 description {
 	    state: "clicked" 0.0;
 	    inherit: "default" 0.0;
+	    visible: 1;
 	    color: 255 255 255 255;
 	    color3: 0 0 0 8;
 	 }
@@ -172,6 +188,7 @@ group {
 	 mouse_events: 1;
 	 description {
 	    state: "default" 0.0;
+	    visible: 0;
 	    align: 0.0 1.0;
 	    rel1 {
 	       to: "e.button.next.label";
@@ -188,9 +205,15 @@ group {
 	       border: 7 7 7 7;
 	    }
 	 }
+	 description {
+	    state: "visible" 0.0;
+	    inherit: "default" 0.0;
+	    visible: 1;
+	 }
 	 description {
 	    state: "clicked" 0.0;
 	    inherit: "default" 0.0;
+	    visible: 1;
 	    image {
 	       normal: "e17_wiz_b2.png";
 	    }
@@ -203,6 +226,7 @@ group {
 	 mouse_events:  0;
 	 description {
 	    state:    "default" 0.0;
+	    visible: 0;
 	    rel1 {
 	       relative: 1.0 1.0;
 	       offset: -17 -17;
@@ -223,9 +247,15 @@ group {
 	       text_class: "wizard_button";
 	    }
 	 }
+	 description {
+	    state:    "visible" 0.0;
+	    inherit: "default" 0.0;
+	    visible: 1;
+	 }
 	 description {
 	    state: "clicked" 0.0;
 	    inherit: "default" 0.0;
+	    visible: 1;
 	    color: 255 255 255 255;
 	    color3: 0 0 0 8;
 	 }
@@ -275,7 +305,7 @@ group {
 	 name:   "b1_unclick";
 	 signal: "mouse,up,1";
 	 source: "b1";
-	 action: STATE_SET "default" 0.0;
+	 action: STATE_SET "visible" 0.0;
 	 target: "b1";
 	 target: "e.button.back.label";
 	 after: "b1";
@@ -292,7 +322,7 @@ group {
 	 name:   "b2_unclick";
 	 signal: "mouse,up,1";
 	 source: "b2";
-	 action: STATE_SET "default" 0.0;
+	 action: STATE_SET "visible" 0.0;
 	 target: "b2";
 	 target: "e.button.next.label";
 	 after: "b2";
@@ -305,5 +335,37 @@ group {
 	 name:   "b2";
 	 action: SIGNAL_EMIT "e,action,next" "";
       }
+      program {
+	 name:   "b1_enable";
+	 signal: "e,state,back,enable";
+	 source: "e";
+	 action: STATE_SET "visible" 0.0;
+	 target: "b1";
+	 target: "e.button.back.label";
+      }
+      program {
+	 name:   "b1_disable";
+	 signal: "e,state,back,disable";
+	 source: "e";
+	 action: STATE_SET "default" 0.0;
+	 target: "b1";
+	 target: "e.button.back.label";
+      }
+      program {
+	 name:   "b2_enable";
+	 signal: "e,state,next,enable";
+	 source: "e";
+	 action: STATE_SET "visible" 0.0;
+	 target: "b2";
+	 target: "e.button.next.label";
+      }
+      program {
+	 name:   "b2_disable";
+	 signal: "e,state,next,disable";
+	 source: "e";
+	 action: STATE_SET "default" 0.0;
+	 target: "b2";
+	 target: "e.button.next.label";
+      }
    }
 }

src/modules/wizard/e_wizard.c

@@ -4,6 +4,8 @@
 #include "e.h"
 #include "e_mod_main.h"
 
+static void _e_wizard_back_eval(void);
+static void _e_wizard_next_eval(void);
 static E_Popup *_e_wizard_main_new(E_Zone *zone);
 static E_Popup *_e_wizard_extra_new(E_Zone *zone);
 static void _e_wizard_cb_key_down(void *data, Evas *e, Evas_Object *obj, void *event);
@@ -16,6 +18,12 @@ static Evas_Object *o_bg = NULL;
 static Evas_Object *o_content = NULL;
 static Evas_List *pages = NULL;
 static E_Wizard_Page *curpage = NULL;
+static int next_ok = 1;
+static int back_ok = 1;
+static int next_can = 0;
+static int back_can = 0;
+static int next_prev = 0;
+static int back_prev = 0;
 
 EAPI int
 e_wizard_init(void)
@@ -74,11 +82,17 @@ e_wizard_go(void)
 {
    if (!curpage)
      {
-	if (pages) curpage = pages->data;
+	if (pages)
+	  {
+	     curpage = pages->data;
+	     if (pages->next) next_can = 1;
+	  }
      }
    if (curpage)
      {
 	if ((!curpage->data) && (curpage->init)) curpage->init(curpage);
+	_e_wizard_back_eval();
+	_e_wizard_next_eval();
 	if ((curpage->show) && (!curpage->show(curpage)))
 	  {
 	     e_wizard_next();
@@ -122,6 +136,11 @@ e_wizard_next(void)
                        if (curpage->init)
 			 curpage->init(curpage);
 		    }
+		  next_can = 1;
+		  if (l->prev) back_can = 1;
+		  else back_can = 0;
+		  _e_wizard_back_eval();
+		  _e_wizard_next_eval();
 		  if ((curpage->show) && (curpage->show(curpage)))
 		    {
 		       break;
@@ -160,6 +179,11 @@ e_wizard_back(void)
                        if (curpage->init)
 			 curpage->init(curpage);
 		    }
+		  next_can = 1;
+		  if (l->prev) back_can = 1;
+		  else back_can = 0;
+		  _e_wizard_back_eval();
+		  _e_wizard_next_eval();
                   if ((curpage->show) && (curpage->show(curpage)))
 		    {
 		       break;
@@ -228,6 +252,50 @@ e_wizard_page_del(E_Wizard_Page *pg)
    free(pg);
 }
 
+EAPI void
+e_wizard_button_back_enable_set(int enable)
+{
+   back_ok = enable;
+   _e_wizard_back_eval();
+}
+
+EAPI void
+e_wizard_button_next_enable_set(int enable)
+{
+   next_ok = enable;
+   _e_wizard_next_eval();
+}
+
+static void
+_e_wizard_back_eval(void)
+{
+   int ok;
+   
+   ok = back_can;
+   if (!back_ok) ok = 0;
+   if (back_prev != ok)
+     {
+	if (ok) edje_object_signal_emit(o_bg, "e,state,back,enable", "e");
+	else edje_object_signal_emit(o_bg, "e,state,back,disable", "e");
+	back_prev = ok;
+     }
+}
+
+static void
+_e_wizard_next_eval(void)
+{
+   int ok;
+   
+   ok = next_can;
+   if (!next_ok) ok = 0;
+   if (next_prev != ok)
+     {
+	if (ok) edje_object_signal_emit(o_bg, "e,state,next,enable", "e");
+	else edje_object_signal_emit(o_bg, "e,state,next,disable", "e");
+	next_prev = ok;
+     }
+}
+
 static E_Popup *
 _e_wizard_main_new(E_Zone *zone)
 {
@@ -333,10 +401,6 @@ _e_wizard_cb_key_down(void *data, Evas *e, Evas_Object *obj, void *event)
 	o = e_widget_focused_object_get(o_content);
 	if (o) e_widget_activate(o);
      }
-   else if (!strcmp(ev->keyname, "Escape"))
-     {
-	e_wizard_shutdown();
-     }
 }
 
 static void

src/modules/wizard/e_wizard.h

@@ -36,8 +36,9 @@ EAPI E_Wizard_Page *
 		    int (*hide)     (E_Wizard_Page *pg),
 		    int (*apply)    (E_Wizard_Page *pg)
 		    );
-EAPI void
+EAPI void e_wizard_page_del(E_Wizard_Page *pg);
-  e_wizard_page_del(E_Wizard_Page *pg);
+EAPI void e_wizard_button_back_enable_set(int enable);
+EAPI void e_wizard_button_next_enable_set(int enable);
     
 #endif
 #endif

src/modules/wizard/page_100.c

@@ -4,6 +4,12 @@
 #include "e.h"
 #include "e_mod_main.h"
 
+static void
+button_cb(void *data, void *data2)
+{
+   e_wizard_button_next_enable_set(1);
+}
+
 EAPI int
 wizard_page_init(E_Wizard_Page *pg)
 {
@@ -23,11 +29,12 @@ wizard_page_show(E_Wizard_Page *pg)
    ob = e_widget_list_add(pg->evas, 1, 0);
    o = e_widget_button_add(pg->evas,
 			   "Hello World", NULL,
-			   NULL, NULL, NULL);
+			   button_cb, NULL, NULL);
    e_widget_list_object_append(ob, o, 0, 0, 0.5);
    evas_object_show(o);
    e_wizard_page_show(ob);
    pg->data = ob;
+   e_wizard_button_next_enable_set(0);
    return 1; /* 1 == show ui, and wait for user, 0 == just continue */
 }
 EAPI int