# HG changeset patch
# User bsmith@81767d24-ef19-dc11-ae90-00e081727c95
# Date 1591837883 0
# Node ID cdb94c6fd61150febead91603bfc16afbffeec39
# Parent  bcc7877dcdaca447596a555e6bdee6a6bf8b735d
Added initial implmentation of dw_feature_get/set() on all platforms.
Only tested on Windows.

diff -r bcc7877dcdac -r cdb94c6fd611 dw.h
--- a/dw.h	Fri Jun 05 16:49:31 2020 +0000
+++ b/dw.h	Thu Jun 11 01:11:23 2020 +0000
@@ -1467,6 +1467,27 @@
 #define DW_MLE_COMPLETE_DASH      (1 << 1)
 #define DW_MLE_COMPLETE_QUOTE     (1 << 2)
 
+/* Library feature constants */
+#define DW_FEATURE_UNSUPPORTED  -1
+#define DW_FEATURE_DISABLED     0
+#define DW_FEATURE_ENABLED      1
+
+typedef enum 
+{
+    DW_FEATURE_HTML = 0,                /* Supports the HTML Widget */
+    DW_FEATURE_HTML_RESULT,             /* Supports the DW_SIGNAL_HTML_RESULT callback */
+    DW_FEATURE_WINDOW_BORDER,           /* Supports custom window border sizes */
+    DW_FEATURE_WINDOW_TRANSPARENCY,     /* Supports window frame transparency */
+    DW_FEATURE_DARK_MODE,               /* Supports Dark Mode user interface */
+    DW_FEATURE_MLE_AUTO_COMPLETE,       /* Supports auto completion in Multi-line Edit boxes */
+    DW_FEATURE_MLE_WORD_WRAP,           /* Supports word wrapping in Multi-line Edit boxes */
+    DW_FEATURE_CONTAINER_STRIPE,        /* Supports striped line display in container widgets */ 
+    DW_FEATURE_MDI,                     /* Supports Multiple Document Interface window frame */
+    DW_FEATURE_NOTEBOOK_STATUS_TEXT,    /* Supports status text area on notebook/tabbed controls */
+    DW_FEATURE_NOTIFICATION,            /* Supports sending system notifications */
+    DW_FEATURE_MAX
+} DWFEATURE;
+
 /* Macro for casting resource IDs to HICN */
 #define DW_RESOURCE(a) (a < 65536 ? (HICN)a : (HICN)0)
 
@@ -1840,6 +1861,8 @@
 int API dw_notification_send(HWND notification);
 wchar_t * API dw_utf8_to_wchar(const char *utf8string);
 char * API dw_wchar_to_utf8(const wchar_t *wstring);
+int API dw_feature_get(DWFEATURE feature); 
+int API dw_feature_set(DWFEATURE feature, int state); 
 /* Exported for language bindings */
 void API _dw_init_thread(void);
 void API _dw_deinit_thread(void);
diff -r bcc7877dcdac -r cdb94c6fd611 gtk/dw.c
--- a/gtk/dw.c	Fri Jun 05 16:49:31 2020 +0000
+++ b/gtk/dw.c	Thu Jun 11 01:11:23 2020 +0000
@@ -13824,3 +13824,67 @@
    return retval;
 }
 
+/*
+ * Gets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_FEATURE_DISABLED if the feature is supported but disabled.
+ *       DW_FEATURE_ENABLED if the feature is supported and enabled.
+ *       Other value greater than 1, same as enabled but with extra info.
+ */
+int API dw_feature_get(DWFEATURE feature)
+{
+    switch(feature)
+    {
+#ifdef USE_WEBKIT
+        case DW_FEATURE_HTML:
+#endif
+#if GLIB_CHECK_VERSION(2,40,0)
+        case DW_FEATURE_NOTIFICATION:
+#endif
+#ifdef DW_INCLUDE_DEPRECATED
+        case DW_FEATURE_MDI:
+#endif
+        case DW_FEATURE_CONTAINER_STRIPE:
+        case DW_FEATURE_MLE_WORD_WRAP:
+            return DW_FEATURE_ENABLED;
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
+
+/*
+ * Sets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ *       state: DW_FEATURE_DISABLED, DW_FEATURE_ENABLED or any value greater than 1.
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_ERROR_NONE if the feature is supported and successfully configured.
+ *       DW_ERROR_GENERAL if the feature is supported but could not be configured.
+ * Remarks: 
+ *       These settings are typically used during dw_init() so issue before 
+ *       setting up the library with dw_init().
+ */
+int API dw_feature_set(DWFEATURE feature, int state)
+{
+    switch(feature)
+    {
+        /* These features are supported but not configurable */
+#ifdef USE_WEBKIT
+        case DW_FEATURE_HTML:
+#endif
+#if GLIB_CHECK_VERSION(2,40,0)
+        case DW_FEATURE_NOTIFICATION:
+#endif
+#ifdef DW_INCLUDE_DEPRECATED
+        case DW_FEATURE_MDI:
+#endif
+        case DW_FEATURE_CONTAINER_STRIPE:
+        case DW_FEATURE_MLE_WORD_WRAP:
+            return DW_ERROR_GENERAL;
+        /* These features are supported and configurable */
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
diff -r bcc7877dcdac -r cdb94c6fd611 gtk3/dw.c
--- a/gtk3/dw.c	Fri Jun 05 16:49:31 2020 +0000
+++ b/gtk3/dw.c	Thu Jun 11 01:11:23 2020 +0000
@@ -12310,3 +12310,77 @@
    return retval;
 }
 
+/*
+ * Gets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_FEATURE_DISABLED if the feature is supported but disabled.
+ *       DW_FEATURE_ENABLED if the feature is supported and enabled.
+ *       Other value greater than 1, same as enabled but with extra info.
+ */
+int API dw_feature_get(DWFEATURE feature)
+{
+    switch(feature)
+    {
+#ifdef USE_WEBKIT
+        case DW_FEATURE_HTML:
+#endif
+#ifdef USE_WEBKIT2
+        case DW_FEATURE_HTML_RESULT:
+#endif
+#if GLIB_CHECK_VERSION(2,40,0)
+        case DW_FEATURE_NOTIFICATION:
+#endif
+#ifdef DW_INCLUDE_DEPRECATED
+        case DW_FEATURE_MDI:
+#endif
+#if !GTK_CHECK_VERSION(3,14,0)
+        case DW_FEATURE_CONTAINER_STRIPE:
+#endif
+        case DW_FEATURE_MLE_WORD_WRAP:
+            return DW_FEATURE_ENABLED;
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
+
+/*
+ * Sets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ *       state: DW_FEATURE_DISABLED, DW_FEATURE_ENABLED or any value greater than 1.
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_ERROR_NONE if the feature is supported and successfully configured.
+ *       DW_ERROR_GENERAL if the feature is supported but could not be configured.
+ * Remarks: 
+ *       These settings are typically used during dw_init() so issue before 
+ *       setting up the library with dw_init().
+ */
+int API dw_feature_set(DWFEATURE feature, int state)
+{
+    switch(feature)
+    {
+        /* These features are supported but not configurable */
+#ifdef USE_WEBKIT
+        case DW_FEATURE_HTML:
+#endif
+#ifdef USE_WEBKIT2
+        case DW_FEATURE_HTML_RESULT:
+#endif
+#if GLIB_CHECK_VERSION(2,40,0)
+        case DW_FEATURE_NOTIFICATION:
+#endif
+#ifdef DW_INCLUDE_DEPRECATED
+        case DW_FEATURE_MDI:
+#endif
+#if !GTK_CHECK_VERSION(3,14,0)
+        case DW_FEATURE_CONTAINER_STRIPE:
+#endif
+        case DW_FEATURE_MLE_WORD_WRAP:
+            return DW_ERROR_GENERAL;
+        /* These features are supported and configurable */
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
diff -r bcc7877dcdac -r cdb94c6fd611 mac/dw.m
--- a/mac/dw.m	Fri Jun 05 16:49:31 2020 +0000
+++ b/mac/dw.m	Thu Jun 11 01:11:23 2020 +0000
@@ -12602,3 +12602,96 @@
         wcstombs(temp, wstring, bufflen);
     return temp;
 }
+
+/*
+ * Gets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_FEATURE_DISABLED if the feature is supported but disabled.
+ *       DW_FEATURE_ENABLED if the feature is supported and enabled.
+ *       Other value greater than 1, same as enabled but with extra info.
+ */
+int API dw_feature_get(DWFEATURE feature)
+{
+    switch(feature)
+    {
+#ifdef BUILDING_FOR_MOUNTAIN_LION
+        case DW_FEATURE_NOTIFICATION:
+#endif
+        case DW_FEATURE_HTML:
+        case DW_FEATURE_HTML_RESULT:
+        case DW_FEATURE_CONTAINER_STRIPE:
+        case DW_FEATURE_MLE_WORD_WRAP:
+        case DW_FEATURE_MLE_AUTO_COMPLETE:
+            return DW_FEATURE_ENABLED;
+#ifdef BUILDING_FOR_MOJAVE
+        case DW_FEATURE_DARK_MODE:
+        {
+            NSAppearance *appearance = [DWApp appearance];
+            
+            if(appearance)
+            {
+                NSAppearanceName basicAppearance = [appearance bestMatchFromAppearancesWithNames:@[NSAppearanceNameAqua, NSAppearanceNameDarkAqua]];
+            
+                if([basicAppearance isEqualToString:NSAppearanceNameDarkAqua])
+                    return 2;
+                if([basicAppearance isEqualToString:NSAppearanceNameAqua])
+                    return DW_FEATURE_DISABLED;
+            }
+            return DW_FEATURE_ENABLED;
+        }
+#endif
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
+
+/*
+ * Sets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ *       state: DW_FEATURE_DISABLED, DW_FEATURE_ENABLED or any value greater than 1.
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_ERROR_NONE if the feature is supported and successfully configured.
+ *       DW_ERROR_GENERAL if the feature is supported but could not be configured.
+ * Remarks: 
+ *       These settings are typically used during dw_init() so issue before 
+ *       setting up the library with dw_init().
+ */
+int API dw_feature_set(DWFEATURE feature, int state)
+{
+    switch(feature)
+    {
+        /* These features are supported but not configurable */
+#ifdef BUILDING_FOR_MOUNTAIN_LION
+        case DW_FEATURE_NOTIFICATION:
+#endif
+        case DW_FEATURE_HTML:
+        case DW_FEATURE_HTML_RESULT:
+        case DW_FEATURE_CONTAINER_STRIPE:
+        case DW_FEATURE_MLE_WORD_WRAP:
+        case DW_FEATURE_MLE_AUTO_COMPLETE:
+            return DW_ERROR_GENERAL;
+        /* These features are supported and configurable */
+#ifdef BUILDING_FOR_MOJAVE
+        case DW_FEATURE_DARK_MODE:
+        {
+            /* Disabled forces the non-dark aqua theme */
+            if(state == DW_FEATURE_DISABLED)
+               [DWApp setAppearance:[NSAppearance appearanceNamed:NSAppearanceNameAqua]];
+            /* Enabled lets the OS decide the mode */
+            else if(state == DW_FEATURE_ENABLED)
+               [DWApp setAppearance:nil];
+            /* 2 forces dark mode aqua appearance */
+            else if(state == 2)
+               [DWApp setAppearance:[NSAppearance appearanceNamed:NSAppearanceNameDarkAqua]];
+            else 
+                return DW_ERROR_GENERAL;
+            return DW_ERROR_NONE;
+        }
+#endif
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
diff -r bcc7877dcdac -r cdb94c6fd611 os2/dw.c
--- a/os2/dw.c	Fri Jun 05 16:49:31 2020 +0000
+++ b/os2/dw.c	Thu Jun 11 01:11:23 2020 +0000
@@ -13830,3 +13830,54 @@
     return NULL;
 #endif
 }
+
+/*
+ * Gets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_FEATURE_DISABLED if the feature is supported but disabled.
+ *       DW_FEATURE_ENABLED if the feature is supported and enabled.
+ *       Other value greater than 1, same as enabled but with extra info.
+ */
+int API dw_feature_get(DWFEATURE feature)
+{
+    switch(feature)
+    {
+        case DW_FEATURE_WINDOW_BORDER:
+        case DW_FEATURE_MLE_WORD_WRAP:
+        case DW_FEATURE_NOTEBOOK_STATUS_TEXT:
+        case DW_FEATURE_MDI:
+            return DW_FEATURE_ENABLED;
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
+
+/*
+ * Sets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ *       state: DW_FEATURE_DISABLED, DW_FEATURE_ENABLED or any value greater than 1.
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_ERROR_NONE if the feature is supported and successfully configured.
+ *       DW_ERROR_GENERAL if the feature is supported but could not be configured.
+ * Remarks: 
+ *       These settings are typically used during dw_init() so issue before 
+ *       setting up the library with dw_init().
+ */
+int API dw_feature_set(DWFEATURE feature, int state)
+{
+    switch(feature)
+    {
+        /* These features are supported but not configurable */
+        case DW_FEATURE_WINDOW_BORDER:
+        case DW_FEATURE_MLE_WORD_WRAP:
+        case DW_FEATURE_NOTEBOOK_STATUS_TEXT:
+        case DW_FEATURE_MDI:
+            return DW_ERROR_GENERAL;
+        /* These features are supported and configurable */
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
diff -r bcc7877dcdac -r cdb94c6fd611 os2/dw.def
--- a/os2/dw.def	Fri Jun 05 16:49:31 2020 +0000
+++ b/os2/dw.def	Thu Jun 11 01:11:23 2020 +0000
@@ -327,3 +327,6 @@
 
   dw_notification_new                    @530
   dw_notification_send                   @531
+
+  dw_feature_get                         @540
+  dw_feature_set                         @541
diff -r bcc7877dcdac -r cdb94c6fd611 win/dw.c
--- a/win/dw.c	Fri Jun 05 16:49:31 2020 +0000
+++ b/win/dw.c	Thu Jun 11 01:11:23 2020 +0000
@@ -13350,3 +13350,86 @@
     return NULL;
 #endif
 }
+
+/*
+ * Gets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_FEATURE_DISABLED if the feature is supported but disabled.
+ *       DW_FEATURE_ENABLED if the feature is supported and enabled.
+ *       Other value greater than 1, same as enabled but with extra info.
+ */
+int API dw_feature_get(DWFEATURE feature)
+{
+    switch(feature)
+    {
+#ifdef BUILD_HTML
+        case DW_FEATURE_HTML:
+        case DW_FEATURE_HTML_RESULT:
+#endif
+#ifdef AEROGLASS
+        case DW_FEATURE_WINDOW_TRANSPARENCY:
+#endif
+#ifdef BUILD_TOAST
+        case DW_FEATURE_NOTIFICATION:
+#endif
+        case DW_FEATURE_CONTAINER_STRIPE:
+        case DW_FEATURE_MDI:
+            return DW_FEATURE_ENABLED;
+#ifdef AEROGLASS
+        case DW_FEATURE_DARK_MODE:
+        {
+            if(_DW_DARK_MODE_SUPPORTED)
+                return _DW_DARK_MODE_ALLOWED;
+            break;
+        }
+#endif
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
+
+/*
+ * Sets the state of the requested library feature.
+ * Parameters:
+ *       feature: The requested feature for example DW_FEATURE_DARK_MODE
+ *       state: DW_FEATURE_DISABLED, DW_FEATURE_ENABLED or any value greater than 1.
+ * Returns:
+ *       DW_FEATURE_UNSUPPORTED if the library or OS does not support the feature.
+ *       DW_ERROR_NONE if the feature is supported and successfully configured.
+ *       DW_ERROR_GENERAL if the feature is supported but could not be configured.
+ * Remarks: 
+ *       These settings are typically used during dw_init() so issue before 
+ *       setting up the library with dw_init().
+ */
+int API dw_feature_set(DWFEATURE feature, int state)
+{
+    switch(feature)
+    {
+        /* These features are supported but not configurable */
+#ifdef BUILD_HTML
+        case DW_FEATURE_HTML:
+        case DW_FEATURE_HTML_RESULT:
+#endif
+#ifdef AEROGLASS
+        case DW_FEATURE_WINDOW_TRANSPARENCY:
+#endif
+#ifdef BUILD_TOAST
+        case DW_FEATURE_NOTIFICATION:
+#endif
+        case DW_FEATURE_CONTAINER_STRIPE:
+        case DW_FEATURE_MDI:
+            return DW_ERROR_GENERAL;
+        /* These features are supported and configurable */
+#ifdef AEROGLASS
+        case DW_FEATURE_DARK_MODE:
+        {
+            _DW_DARK_MODE_ALLOWED = state;
+            return DW_ERROR_NONE;
+        }
+#endif
+    }
+    return DW_FEATURE_UNSUPPORTED;
+}
+
diff -r bcc7877dcdac -r cdb94c6fd611 win/dw.def
--- a/win/dw.def	Fri Jun 05 16:49:31 2020 +0000
+++ b/win/dw.def	Thu Jun 11 01:11:23 2020 +0000
@@ -324,3 +324,6 @@
 
   dw_notification_new                    @530
   dw_notification_send                   @531
+
+  dw_feature_get                         @540
+  dw_feature_set                         @541