Forms: add event handling api and specifically support for javascript alert

5 files changed, 111 insertions, 0 deletions

diff --git a/apps/jstest_main.c b/apps/jstest_main.c
index bb2f4afd..a6ff06d1 100644
--- a/apps/jstest_main.c
+++ b/apps/jstest_main.c
@@ -37,6 +37,22 @@ void winerror(pdfapp_t *app, char *msg)
 	exit(1);
 }
 
+void winalert(pdfapp_t *app, fz_alert_event *alert)
+{
+	fprintf(stderr, "Alert %s: %s", alert->title, alert->message);
+	switch (alert->button_group_type)
+	{
+	case FZ_ALERT_BUTTON_GROUP_OK:
+	case FZ_ALERT_BUTTON_GROUP_OK_CANCEL:
+		alert->button_pressed = FZ_ALERT_BUTTON_OK;
+		break;
+	case FZ_ALERT_BUTTON_GROUP_YES_NO:
+	case FZ_ALERT_BUTTON_GROUP_YES_NO_CANCEL:
+		alert->button_pressed = FZ_ALERT_BUTTON_YES;
+		break;
+	}
+}
+
 static char pd_password[256] = "";
 static char td_textinput[LONGLINE] = "";
 
diff --git a/apps/pdfapp.c b/apps/pdfapp.c
index 3468e07d..0a87565a 100644
--- a/apps/pdfapp.c
+++ b/apps/pdfapp.c
@@ -101,6 +101,21 @@ void pdfapp_invert(pdfapp_t *app, fz_bbox rect)
 	fz_invert_pixmap_rect(app->image, rect);
 }
 
+static void event_cb(fz_doc_event *event, void *data)
+{
+	pdfapp_t *app = (pdfapp_t *)data;
+
+	switch (event->type)
+	{
+	case FZ_DOCUMENT_EVENT_ALERT:
+		{
+			fz_alert_event *alert = fz_access_alert_event(event);
+			winalert(app, alert);
+		}
+		break;
+	}
+}
+
 void pdfapp_open(pdfapp_t *app, char *filename, int reload)
 {
 	fz_context *ctx = app->ctx;
@@ -108,8 +123,15 @@ void pdfapp_open(pdfapp_t *app, char *filename, int reload)
 
 	fz_try(ctx)
 	{
+		fz_interactive *idoc;
+
 		app->doc = fz_open_document(ctx, filename);
 
+		idoc = fz_interact(app->doc);
+
+		if (idoc)
+			fz_set_doc_event_callback(idoc, event_cb, app);
+
 		if (fz_needs_password(app->doc))
 		{
 			int okay = fz_authenticate_password(app->doc, password);
diff --git a/apps/pdfapp.h b/apps/pdfapp.h
index 43bc7b3b..46dcf291 100644
--- a/apps/pdfapp.h
+++ b/apps/pdfapp.h
@@ -37,6 +37,7 @@ extern void winhelp(pdfapp_t*);
 extern void winfullscreen(pdfapp_t*, int state);
 extern int winsavequery(pdfapp_t*);
 extern int wingetsavepath(pdfapp_t*, char *buf, int len);
+extern void winalert(pdfapp_t *, fz_alert_event *alert);
 
 struct pdfapp_s
 {
diff --git a/apps/win_main.c b/apps/win_main.c
index 025e38db..97f927f2 100644
--- a/apps/win_main.c
+++ b/apps/win_main.c
@@ -99,6 +99,62 @@ void winerror(pdfapp_t *app, char *msg)
 	exit(1);
 }
 
+void winalert(pdfapp_t *app, fz_alert_event *alert)
+{
+	int buttons = MB_OK;
+	int icon = MB_ICONWARNING;
+	int pressed = FZ_ALERT_BUTTON_NONE;
+
+	switch (alert->icon_type)
+	{
+	case FZ_ALERT_ICON_ERROR:
+		icon = MB_ICONERROR;
+		break;
+	case FZ_ALERT_ICON_WARNING:
+		icon = MB_ICONWARNING;
+		break;
+	case FZ_ALERT_ICON_QUESTION:
+		icon = MB_ICONQUESTION;
+		break;
+	case FZ_ALERT_ICON_STATUS:
+		icon = MB_ICONINFORMATION;
+		break;
+	}
+
+	switch (alert->button_group_type)
+	{
+	case FZ_ALERT_BUTTON_GROUP_OK:
+		buttons = MB_OK;
+		break;
+	case FZ_ALERT_BUTTON_GROUP_OK_CANCEL:
+		buttons = MB_OKCANCEL;
+		break;
+	case FZ_ALERT_BUTTON_GROUP_YES_NO:
+		buttons = MB_YESNO;
+		break;
+	case FZ_ALERT_BUTTON_GROUP_YES_NO_CANCEL:
+		buttons = MB_YESNOCANCEL;
+		break;
+	}
+
+	pressed = MessageBoxA(hwndframe, alert->message, alert->title, icon|buttons);
+
+	switch (pressed)
+	{
+	case IDOK:
+		alert->button_pressed = FZ_ALERT_BUTTON_OK;
+		break;
+	case IDCANCEL:
+		alert->button_pressed = FZ_ALERT_BUTTON_CANCEL;
+		break;
+	case IDNO:
+		alert->button_pressed = FZ_ALERT_BUTTON_NO;
+		break;
+	case IDYES:
+		alert->button_pressed = FZ_ALERT_BUTTON_YES;
+	}
+}
+
 int winsavequery(pdfapp_t *app)
 {
 	switch(MessageBoxA(hwndframe, "File has unsaved changes. Do you want to save", "MuPDF", MB_YESNOCANCEL))
diff --git a/apps/x11_main.c b/apps/x11_main.c
index 623187fa..182aadb4 100644
--- a/apps/x11_main.c
+++ b/apps/x11_main.c
@@ -110,6 +110,22 @@ void winwarn(pdfapp_t *app, char *msg)
 	fprintf(stderr, "mupdf: warning: %s\n", msg);
 }
 
+void winalert(pdfapp_t *app, fz_alert_event *alert)
+{
+	fprintf(stderr, "Alert %s: %s", alert->title, alert->message);
+	switch (alert->button_group_type)
+	{
+	case FZ_ALERT_BUTTON_GROUP_OK:
+	case FZ_ALERT_BUTTON_GROUP_OK_CANCEL:
+		alert->button_pressed = FZ_ALERT_BUTTON_OK;
+		break;
+	case FZ_ALERT_BUTTON_GROUP_YES_NO:
+	case FZ_ALERT_BUTTON_GROUP_YES_NO_CANCEL:
+		alert->button_pressed = FZ_ALERT_BUTTON_YES;
+		break;
+	}
+}
+
 char *winpassword(pdfapp_t *app, char *filename)
 {
 	char *r = password;