# HG changeset patch
# User bsmith@81767d24-ef19-dc11-ae90-00e081727c95
# Date 1573121545 0
# Node ID c30f4354966ea1fc1447e4a09ead310ee9509666
# Parent  b1838dd5509a2efd523d2981f0ef2389b6834773
Win: Added support for dw_html_javascript_run() using Edge (Chromium).
OS/2: Added dw_html_javascript_run() stub for OS/2 so things compile.

diff -r b1838dd5509a -r c30f4354966e os2/dw.c
--- a/os2/dw.c	Thu Nov 07 08:11:28 2019 +0000
+++ b/os2/dw.c	Thu Nov 07 10:12:25 2019 +0000
@@ -12863,6 +12863,24 @@
 }
 
 /*
+ * Executes the javascript contained in "script" in the HTML window.
+ * Parameters:
+ *       handle: Handle to the HTML window.
+ *       script: Javascript code to execute.
+ *       scriptdata: Data passed to the signal handler.
+ * Notes: A DW_SIGNAL_HTML_RESULT event will be raised with scriptdata.
+ * Returns:
+ *       DW_ERROR_NONE (0) on success.
+ */
+int dw_html_javascript_run(HWND handle, char *script, void *scriptdata)
+{
+   handle = handle;
+   script = script;
+   scriptdata = scriptdata;
+   return DW_ERROR_UNKNOWN;
+}
+
+/*
  * Create a new HTML window (widget) to be packed.
  * Not available under OS/2, eCS
  * Parameters:
diff -r b1838dd5509a -r c30f4354966e os2/dw.def
--- a/os2/dw.def	Thu Nov 07 08:11:28 2019 +0000
+++ b/os2/dw.def	Thu Nov 07 10:12:25 2019 +0000
@@ -304,6 +304,7 @@
   dw_html_action                         @471
   dw_html_raw                            @472
   dw_html_url                            @473
+  dw_html_javascript_run                 @474
 
   dw_calendar_new                        @480
   dw_calendar_set_date                   @481
diff -r b1838dd5509a -r c30f4354966e win/browser.c
--- a/win/browser.c	Thu Nov 07 08:11:28 2019 +0000
+++ b/win/browser.c	Thu Nov 07 10:12:25 2019 +0000
@@ -1421,7 +1421,20 @@
 }
 
 
+/******************************* dw_html_javascript_run() ****************************
+ * Runs a javascript in the specified browser context.
+ *
+ * hwnd			=	Handle to the window hosting the browser object.
+ * script		=	Pointer to nul-terminated javascript string.
+ * scriptdata	=   Pointer to user data to be passed to the callback.
+ *
+ * RETURNS: 0 if success, or non-zero if an error.
+ */
 
+int _dw_html_javascript_run(HWND hwnd, LPCWSTR script, void *scriptdata)
+{
+	return DW_ERROR_UNKNOWN;
+}
 
 
 /******************************* ResizeBrowser() ****************************
diff -r b1838dd5509a -r c30f4354966e win/dw-mingw.def
--- a/win/dw-mingw.def	Thu Nov 07 08:11:28 2019 +0000
+++ b/win/dw-mingw.def	Thu Nov 07 10:12:25 2019 +0000
@@ -303,6 +303,7 @@
   dw_html_action                         @471
   dw_html_raw                            @472
   dw_html_url                            @473
+  dw_html_javascript_run                 @474
 
   dw_calendar_new                        @480
   dw_calendar_set_date                   @481
diff -r b1838dd5509a -r c30f4354966e win/dw.c
--- a/win/dw.c	Thu Nov 07 08:11:28 2019 +0000
+++ b/win/dw.c	Thu Nov 07 10:12:25 2019 +0000
@@ -364,7 +364,7 @@
 static int in_checkbox_handler = 0;
 
 /* List of signals and their equivilent Win32 message */
-#define SIGNALMAX 17
+#define SIGNALMAX 19
 
 SignalList SignalTranslate[SIGNALMAX] = {
    { WM_SIZE,         DW_SIGNAL_CONFIGURE },
@@ -383,7 +383,9 @@
    { WM_VSCROLL,      DW_SIGNAL_VALUE_CHANGED },
    { TCN_SELCHANGE,   DW_SIGNAL_SWITCH_PAGE },
    { LVN_COLUMNCLICK, DW_SIGNAL_COLUMN_CLICK },
-   { TVN_ITEMEXPANDED,DW_SIGNAL_TREE_EXPAND }
+   { TVN_ITEMEXPANDED,DW_SIGNAL_TREE_EXPAND },
+   { WM_USER+100,     DW_SIGNAL_HTML_RESULT },
+   { WM_USER+101,     DW_SIGNAL_HTML_CHANGED }
 };
 
 #ifdef BUILD_DLL
@@ -2382,6 +2384,20 @@
                      }
                   }
                   break;
+               case WM_USER+100:
+                  {
+                      int (DWSIGNAL *htmlresultfunc)(HWND, int, char *, void *, void *) = tmp->signalfunction;
+                      
+                      return htmlresultfunc(tmp->window, mp1 ? DW_ERROR_NONE : DW_ERROR_UNKNOWN, (char *)mp1, (void *)mp2, tmp->data);
+                  }
+                  break;
+               case WM_USER+101:
+                  {
+                      int (DWSIGNAL *htmlchangedfunc)(HWND, int, char *, void *) = tmp->signalfunction;
+                      
+                      return htmlchangedfunc(tmp->window, DW_POINTER_TO_INT(mp1), (char *)mp2, tmp->data);
+                  }
+                  break;
             }
          }
          if(tmp)
@@ -5768,6 +5784,29 @@
 }
 
 /*
+ * Executes the javascript contained in "script" in the HTML window.
+ * Parameters:
+ *       handle: Handle to the HTML window.
+ *       script: Javascript code to execute.
+ *       scriptdata: Data passed to the signal handler.
+ * Notes: A DW_SIGNAL_HTML_RESULT event will be raised with scriptdata.
+ * Returns:
+ *       DW_ERROR_NONE (0) on success.
+ */
+int dw_html_javascript_run(HWND handle, char *script, void *scriptdata)
+{
+#if (defined(BUILD_DLL) || defined(BUILD_HTML))
+#if BUILD_EDGE
+   if (_DW_EDGE_DETECTED)
+      return _dw_edge_javascript_run(handle, UTF8toWide(script), scriptdata);
+#endif
+   return _dw_html_javascript_run(handle, script, scriptdata);
+#else
+   return DW_ERROR_UNKNOWN;
+#endif
+}
+
+/*
  * Create a bitmap object to be packed.
  * Parameters:
  *       id: An ID to be used with dw_window_from_id or 0L.
diff -r b1838dd5509a -r c30f4354966e win/dw.def
--- a/win/dw.def	Thu Nov 07 08:11:28 2019 +0000
+++ b/win/dw.def	Thu Nov 07 10:12:25 2019 +0000
@@ -301,6 +301,7 @@
   dw_html_action                         @471
   dw_html_raw                            @472
   dw_html_url                            @473
+  dw_html_javascript_run                 @474
 
   dw_calendar_new                        @480
   dw_calendar_set_date                   @481
diff -r b1838dd5509a -r c30f4354966e win/edge.cpp
--- a/win/edge.cpp	Thu Nov 07 08:11:28 2019 +0000
+++ b/win/edge.cpp	Thu Nov 07 10:12:25 2019 +0000
@@ -89,7 +89,7 @@
 			case DW_HTML_GOHOME:
 			{
 				// Call the IWebView2WebView object's GoHome function.
-				//webview->GoHome();
+				dw_html_url(hwnd, (char *)DW_HOME_URL);
 				break;
 			}
 
@@ -147,7 +147,7 @@
 	 * Displays a URL, or HTML file on disk.
 	 *
 	 * hwnd =		Handle to the window hosting the browser object.
-	 * webPageName =	Pointer to nul-terminated name of the URL/file.
+	 * url	=		Pointer to nul-terminated name of the URL/file.
 	 *
 	 * RETURNS: 0 if success, or non-zero if an error.
 	 */
@@ -167,6 +167,40 @@
 		return DW_ERROR_NONE;
 	}
 
+	/* These reference functions in dw.c */
+	#define WideToUTF8(a) _myWideToUTF8(a, a ? _alloca(WideCharToMultiByte(CP_UTF8, 0, a, -1, NULL, 0, NULL, NULL)) : NULL)
+	char* _myWideToUTF8(LPWSTR widestring, void* outbuf);
+	LRESULT CALLBACK _wndproc(HWND hWnd, UINT msg, WPARAM mp1, LPARAM mp2);
+
+	/******************************* dw_edge_javascript_run() ****************************
+	 * Runs a javascript in the specified browser context.
+	 *
+	 * hwnd			=	Handle to the window hosting the browser object.
+	 * script		=	Pointer to nul-terminated javascript string.
+	 * scriptdata	=   Pointer to user data to be passed to the callback.
+	 *
+	 * RETURNS: 0 if success, or non-zero if an error.
+	 */
+
+	int _dw_edge_javascript_run(HWND hwnd, LPCWSTR script, void *scriptdata)
+	{
+		IWebView2WebView* webview;
+
+		// Retrieve the browser object's pointer we stored in our window's GWL_USERDATA when
+		// we initially attached the browser object to this window.
+		webview = (IWebView2WebView*)dw_window_get_data(hwnd, _DW_HTML_DATA_NAME);
+
+		if (webview)
+			webview->ExecuteScript(script,
+				Callback<IWebView2ExecuteScriptCompletedHandler>(
+					[hwnd, scriptdata](HRESULT error, PCWSTR result) -> HRESULT
+					{
+						_wndproc(hwnd, WM_USER + 100, (error == S_OK ? (WPARAM)WideToUTF8((LPWSTR)result) : NULL), (LPARAM)scriptdata);
+						return S_OK;
+					}).Get());
+		return DW_ERROR_NONE;
+	}
+
 	/************************** edgeWindowProc() *************************
 	 * Our message handler for our window to host the browser.
 	 */