Added text grid windows. Output, cursor placement, and character input work. Line...
[rodin/chimara.git] / src / input.c
index caa1824c5d92e75b4c54fce70fa23ff1f9dcfb09..bf15211267292148fd1f6b582582e6bf666a7317 100644 (file)
 #include "input.h"
 
 /** glk_request_char_event:
- * @win: A window to request char events from Request
+ * @win: A window to request char events from.
  *
- * Request input of a Latin-1 character or special key. A window cannot have requests
- * for both character and line input at the same time. Nor can it have requests
- * for character input of both types (Latin-1 and Unicode). It is illegal to
- * call glk_request_char_event() if the window already has a pending request
- * for either character or line input. 
+ * Request input of a Latin-1 character or special key. A window cannot have 
+ * requests for both character and line input at the same time. Nor can it have
+ * requests for character input of both types (Latin-1 and Unicode). It is
+ * illegal to call glk_request_char_event() if the window already has a pending
+ * request for either character or line input. 
  */
 void
 glk_request_char_event(winid_t win)
 {
        g_return_if_fail(win);
        g_return_if_fail(win->input_request_type == INPUT_REQUEST_NONE);
-       g_return_if_fail(win->window_type != wintype_TextBuffer || win->window_type != wintype_TextGrid);
+       g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
 
        win->input_request_type = INPUT_REQUEST_CHARACTER;
        g_signal_handler_unblock( G_OBJECT(win->widget), win->keypress_handler );
 }
 
 /** glk_request_char_event_uni:
- * @win: A window to request char events from Request
+ * @win: A window to request char events from.
  *
- * Request input of a Unicode character or special key. A window cannot have requests
- * for both character and line input at the same time. Nor can it have requests
- * for character input of both types (Latin-1 and Unicode). It is illegal to
- * call glk_request_char_event_uni() if the window already has a pending request
- * for either character or line input. 
+ * Request input of a Unicode character or special key. See 
+ * glk_request_char_event().
  */
 void
 glk_request_char_event_uni(winid_t win)
 {
        g_return_if_fail(win);
        g_return_if_fail(win->input_request_type == INPUT_REQUEST_NONE);
-       g_return_if_fail(win->window_type != wintype_TextBuffer || win->window_type != wintype_TextGrid);
+       g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
 
        win->input_request_type = INPUT_REQUEST_CHARACTER_UNICODE;
        g_signal_handler_unblock( G_OBJECT(win->widget), win->keypress_handler );
 }
 
+/* Internal function: Request either latin-1 or unicode line input. */
 void
-glk_request_line_event(winid_t win, char* buf, glui32 maxlen, glui32 initlen)
+request_line_event_common(winid_t win, glui32 maxlen, gboolean insert, gchar *inserttext)
 {
-       GtkTextBuffer *window_buffer;
+       GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
+
+    if(win->type == wintype_TextGrid)
+    {
+        GtkTextMark *cursor = gtk_text_buffer_get_mark(buffer, "cursor_position");
+        GtkTextIter start_iter, end_iter;
+        gtk_text_buffer_get_iter_at_mark(buffer, &start_iter, cursor);
+        
+        /* Determine the maximum length of the line input */
+        gint cursorpos = gtk_text_iter_get_line_offset(&start_iter);
+        gint input_length = MIN(win->width - 1 - cursorpos, win->line_input_buffer_max_len);
+        end_iter = start_iter;
+        gtk_text_iter_set_line_offset(&end_iter, cursorpos + input_length);
+        
+        /* Insert pre-entered text if needed */
+        gchar *text;
+        if(!insert)
+            text = g_strnfill(input_length, ' ');
+        else
+        {
+            gchar *blanks = g_strnfill(input_length - g_utf8_strlen(inserttext, -1), ' ');
+            text = g_strconcat(inserttext, blanks, NULL);
+            g_free(blanks);
+        }            
+        
+        /* Erase the text currently in the input field and replace it with blanks or the insert text, with the editable "input_field" tag */
+        GtkTextIter text_start, text_end;
+        GtkTextTag *uneditable = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "uneditable");
+        gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
+        gtk_text_buffer_get_start_iter(buffer, &text_start);
+        gtk_text_buffer_apply_tag(buffer, uneditable, &text_start, &start_iter);
+        gtk_text_buffer_insert_with_tags_by_name(buffer, &start_iter, text, -1, "input_field", NULL);
+        g_free(text);
+        gtk_text_buffer_get_end_iter(buffer, &text_end);
+        gtk_text_buffer_apply_tag(buffer, uneditable, &start_iter, &text_end);
+
+        gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), TRUE);
+        g_signal_handler_unblock(GTK_TEXT_VIEW(win->widget), win->insert_text_handler);
+    }
+    else if(win->type == wintype_TextBuffer)
+    {
+        /* Move the input_position mark to the end of the window_buffer */
+        GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position");
+        GtkTextIter end_iter;
+        gtk_text_buffer_get_end_iter(buffer, &end_iter);
+        gtk_text_buffer_move_mark(buffer, input_position, &end_iter);
+    
+        /* Set the entire contents of the window_buffer as uneditable
+         * (so input can only be entered at the end) */
+        GtkTextIter start_iter;
+        gtk_text_buffer_get_start_iter(buffer, &start_iter);
+        gtk_text_buffer_remove_tag_by_name(buffer, "uneditable", &start_iter, &end_iter);
+        gtk_text_buffer_apply_tag_by_name(buffer, "uneditable", &start_iter, &end_iter);
+        
+        /* Insert pre-entered text if needed */
+        if(insert)
+            gtk_text_buffer_insert(buffer, &end_iter, inserttext, -1);
+        
+        /* Scroll to input point */
+        gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(win->widget), input_position);
+        
+        gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), TRUE);
+        g_signal_handler_unblock(buffer, win->insert_text_handler);
+    }
+}
 
+/**
+ * glk_request_line_event:
+ * @win: A text buffer or text grid window to request line input on.
+ * @buf: A buffer of at least @maxlen bytes.
+ * @maxlen: Length of the buffer.
+ * @initlen: The number of characters in @buf to pre-enter.
+ *
+ * Requests input of a line of Latin-1 characters. A window cannot have requests
+ * for both character and line input at the same time. Nor can it have requests
+ * for line input of both types (Latin-1 and Unicode). It is illegal to call
+ * glk_request_line_event() if the window already has a pending request for
+ * either character or line input.
+ * 
+ * The @buf argument is a pointer to space where the line input will be stored.
+ * (This may not be %NULL.) @maxlen is the length of this space, in bytes; the
+ * library will not accept more characters than this. If @initlen is nonzero,
+ * then the first @initlen bytes of @buf will be entered as pre-existing input
+ * -- just as if the player had typed them himself. (The player can continue
+ * composing after this pre-entered input, or delete it or edit as usual.)
+ * 
+ * The contents of the buffer are undefined until the input is completed (either
+ * by a line input event, or glk_cancel_line_event(). The library may or may not
+ * fill in the buffer as the player composes, while the input is still pending;
+ * it is illegal to change the contents of the buffer yourself. 
+ */
+void
+glk_request_line_event(winid_t win, char* buf, glui32 maxlen, glui32 initlen)
+{
        g_return_if_fail(win);
+       g_return_if_fail(buf);
        g_return_if_fail(win->input_request_type == INPUT_REQUEST_NONE);
-       g_return_if_fail(win->window_type != wintype_TextBuffer || win->window_type != wintype_TextGrid);
-
-       window_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
+       g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
 
        win->input_request_type = INPUT_REQUEST_LINE;
        win->line_input_buffer = buf;
        win->line_input_buffer_max_len = maxlen;
 
-       /* Move the input_position mark to the end of the window_buffer */
-       GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
-       GtkTextIter end_iter;
-       gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
-       gtk_text_buffer_move_mark(window_buffer, input_position, &end_iter);
-
-       /* Set the entire contents of the window_buffer as uneditable
-        * (so input can only be entered at the end) */
-       GtkTextIter start_iter;
-       gtk_text_buffer_get_start_iter(window_buffer, &start_iter);
-       gtk_text_buffer_remove_tag_by_name(window_buffer, "uneditable", &start_iter, &end_iter);
-       gtk_text_buffer_apply_tag_by_name(window_buffer, "uneditable", &start_iter, &end_iter);
-
-       if(initlen > 0) {
-               gtk_text_buffer_insert(window_buffer, &end_iter, buf, initlen);
-       }
-
-       gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(win->widget), input_position);
-       g_signal_handler_unblock( G_OBJECT(window_buffer), win->insert_text_handler );
-       gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), TRUE);
+       gchar *inserttext = (initlen > 0)? g_strndup(buf, initlen) : g_strdup("");
+       request_line_event_common(win, maxlen, (initlen > 0), inserttext);
+       g_free(inserttext);
 }
 
+/**
+ * glk_request_line_event_uni:
+ * @win: A text buffer or text grid window to request line input on.
+ * @buf: A buffer of at least @maxlen characters.
+ * @maxlen: Length of the buffer.
+ * @initlen: The number of characters in @buf to pre-enter.
+ *
+ * Request input of a line of Unicode characters. This works the same as
+ * glk_request_line_event(), except the result is stored in an array of
+ * <type>glui32</type> values instead of an array of characters, and the values
+ * may be any valid Unicode code points.
+ * 
+ * The result will be in Unicode Normalization Form C. This basically means that
+ * composite characters will be single characters where possible, instead of
+ * sequences of base and combining marks. See 
+ * <ulink url="http://www.unicode.org/reports/tr15/">Unicode Standard Annex #15
+ * </ulink> for the details.
+ */
 void
 glk_request_line_event_uni(winid_t win, glui32 *buf, glui32 maxlen, glui32 initlen)
 {
-       GtkTextBuffer *window_buffer;
-
        g_return_if_fail(win);
+       g_return_if_fail(buf);
        g_return_if_fail(win->input_request_type == INPUT_REQUEST_NONE);
-       g_return_if_fail(win->window_type != wintype_TextBuffer || win->window_type != wintype_TextGrid);
-
-       window_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget));
+       g_return_if_fail(win->type != wintype_TextBuffer || win->type != wintype_TextGrid);
 
        win->input_request_type = INPUT_REQUEST_LINE_UNICODE;
        win->line_input_buffer_unicode = buf;
        win->line_input_buffer_max_len = maxlen;
 
-       /* Move the input_position mark to the end of the window_buffer */
-       GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
-       GtkTextIter end_iter;
-       gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
-       gtk_text_buffer_move_mark(window_buffer, input_position, &end_iter);
-
-       /* Set the entire contents of the window_buffer as uneditable
-        * (so input can only be entered at the end) */
-       GtkTextIter start_iter;
-       gtk_text_buffer_get_start_iter(window_buffer, &start_iter);
-       gtk_text_buffer_remove_tag_by_name(window_buffer, "uneditable", &start_iter, &end_iter);
-       gtk_text_buffer_apply_tag_by_name(window_buffer, "uneditable", &start_iter, &end_iter);
-
+       gchar *utf8;
        if(initlen > 0) {
                GError *error = NULL;
-               gchar *utf8;
                utf8 = g_ucs4_to_utf8(buf, initlen, NULL, NULL, &error);
                        
                if(utf8 == NULL)
                {
-                       error_dialog(NULL, error, "Error during unicode->utf8 conversion: ");
+                       g_warning("Error during unicode->utf8 conversion: %s", error->message);
                        return;
                }
-
-               gtk_text_buffer_insert(window_buffer, &end_iter, utf8, -1);
-               g_free(utf8);
        }
+       else
+               utf8 = g_strdup("");
 
-       gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(win->widget), input_position);
-       g_signal_handler_unblock( G_OBJECT(window_buffer), win->insert_text_handler );
-       gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), TRUE);
+       request_line_event_common(win, maxlen, (initlen > 0), utf8);            
+       g_free(utf8);
 }
 
-
-
+/* Internal function: Callback for signal key-press-event on a text buffer or text grid window. */
 gboolean
-on_window_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t window)
-{
-       if(window->input_request_type != INPUT_REQUEST_CHARACTER && 
-               window->input_request_type != INPUT_REQUEST_CHARACTER_UNICODE) {
+on_window_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
+{    
+       if(win->input_request_type != INPUT_REQUEST_CHARACTER && 
+               win->input_request_type != INPUT_REQUEST_CHARACTER_UNICODE)
                return FALSE;
-       }
 
        int keycode;
 
@@ -146,13 +216,15 @@ on_window_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t window)
                case GDK_KP_Left: keycode = keycode_Left; break;
                case GDK_Right:
                case GDK_KP_Right: keycode = keycode_Right; break;
+               case GDK_Linefeed:
                case GDK_Return:
                case GDK_KP_Enter: keycode = keycode_Return; break;
                case GDK_Delete:
                case GDK_BackSpace:
                case GDK_KP_Delete: keycode = keycode_Delete; break;
                case GDK_Escape: keycode = keycode_Escape; break;
-               case GDK_Tab: keycode = keycode_Tab; break;
+               case GDK_Tab: 
+               case GDK_KP_Tab: keycode = keycode_Tab; break;
                case GDK_Page_Up:
                case GDK_KP_Page_Up: keycode = keycode_PageUp; break;
                case GDK_Page_Down:
@@ -161,10 +233,14 @@ on_window_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t window)
                case GDK_KP_Home: keycode = keycode_Home; break;
                case GDK_End:
                case GDK_KP_End: keycode = keycode_End; break;
-               case GDK_F1: keycode = keycode_Func1; break;
-               case GDK_F2: keycode = keycode_Func2; break;
-               case GDK_F3: keycode = keycode_Func3; break;
-               case GDK_F4: keycode = keycode_Func4; break;
+               case GDK_F1: 
+               case GDK_KP_F1: keycode = keycode_Func1; break;
+               case GDK_F2: 
+               case GDK_KP_F2: keycode = keycode_Func2; break;
+               case GDK_F3: 
+               case GDK_KP_F3: keycode = keycode_Func3; break;
+               case GDK_F4: 
+               case GDK_KP_F4: keycode = keycode_Func4; break;
                case GDK_F5: keycode = keycode_Func5; break;
                case GDK_F6: keycode = keycode_Func6; break;
                case GDK_F7: keycode = keycode_Func7; break;
@@ -175,108 +251,145 @@ on_window_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t window)
                case GDK_F12: keycode = keycode_Func12; break;
                default:
                        keycode = gdk_keyval_to_unicode(event->keyval);
+                       /* If keycode is 0, then keyval was not recognized; also return
+                       unknown if Latin-1 input was requested and the character is not in
+                       Latin-1 */
+                       if(keycode == 0 || (win->input_request_type == INPUT_REQUEST_CHARACTER && keycode > 255))
+                               keycode = keycode_Unknown;      
        }
 
-       if(window->input_request_type == INPUT_REQUEST_CHARACTER) {
-               if(keycode >= 1 || keycode <= 255) {
-                       event_throw(evtype_CharInput, window, keycode, 0);
-               } else {
-                       event_throw(evtype_CharInput, window, keycode_Unknown, 0);
-               }
-       } else {
-               if(keycode == 0) {
-                       event_throw(evtype_CharInput, window, keycode_Unknown, 0);
-               } else {
-                       event_throw(evtype_CharInput, window, keycode, 0);
-               }
-       }
-
+       event_throw(evtype_CharInput, win, keycode, 0);
+       
        /* Only one keypress will be handled */
-       window->input_request_type = INPUT_REQUEST_NONE;
-       g_signal_handler_block( G_OBJECT(window->widget), window->keypress_handler );
+       win->input_request_type = INPUT_REQUEST_NONE;
+       g_signal_handler_block( G_OBJECT(win->widget), win->keypress_handler );
 
        return TRUE;
 }
 
-void
-on_window_insert_text(GtkTextBuffer *textbuffer, GtkTextIter *location, gchar *text, gint len, gpointer user_data) 
+/* Internal function: finish handling a line input request, for both text grid and text buffer windows. */
+static void
+end_line_input_request(winid_t win, gchar *inserted_text)
 {
-       gchar *newline_pos = strchr(text, '\n');
-       if(newline_pos != NULL) {
-               printf("position: %d\n", newline_pos-text);
-               *newline_pos = 'a';
-       }
+    /* Convert the string from UTF-8 to Latin-1 or Unicode */
+    if(win->input_request_type == INPUT_REQUEST_LINE) 
+    {
+        GError *error = NULL;
+        gchar *latin1;
+        gsize bytes_written;
+        latin1 = g_convert_with_fallback(inserted_text, -1, "ISO-8859-1", "UTF-8", "?", NULL, &bytes_written, &error);
+        
+        if(latin1 == NULL)
+        {
+            g_warning("Error during utf8->latin1 conversion: %s", error->message);
+            event_throw(evtype_LineInput, win, 0, 0);
+            return;
+        }
+
+        /* Place input in the echo stream */
+        if(win->echo_stream != NULL) 
+            glk_put_string_stream(win->echo_stream, latin1);
+
+        /* Copy the string (but not the NULL at the end) */
+        int copycount = MIN(win->line_input_buffer_max_len, bytes_written - 1);
+        memcpy(win->line_input_buffer, latin1, copycount);
+        g_free(latin1);
+        event_throw(evtype_LineInput, win, copycount, 0);
+    }
+    else if(win->input_request_type == INPUT_REQUEST_LINE_UNICODE) 
+    {
+        gunichar *unicode;
+        glong items_written;
+        unicode = g_utf8_to_ucs4_fast(inserted_text, -1, &items_written);
+        
+        if(unicode == NULL)
+        {
+            g_warning("Error during utf8->unicode conversion");
+            event_throw(evtype_LineInput, win, 0, 0);
+            return;
+        }
+
+        /* Place input in the echo stream */
+        /* TODO: fixme
+        if(win->echo_stream != NULL) 
+            glk_put_string_stream_uni(window->echo_stream, unicode);*/
+
+        /* Copy the string (but not the NULL at the end) */
+        int copycount = MIN(win->line_input_buffer_max_len, items_written);
+        memcpy(win->line_input_buffer_unicode, unicode, copycount * sizeof(gunichar));
+        g_free(unicode);
+        event_throw(evtype_LineInput, win, copycount, 0);
+    }
+    else 
+        g_warning("%s: Wrong input request type.", __func__);
+
+    win->input_request_type = INPUT_REQUEST_NONE;
 }
 
-void
-after_window_insert_text(GtkTextBuffer *textbuffer, GtkTextIter *location, gchar *text, gint len, winid_t window) 
-{
-       if( strchr(text, '\n') != NULL) { 
-               /* Make the window uneditable again and remove signal handlers */
-               GtkTextBuffer *window_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(window->widget));
-               gtk_text_view_set_editable(GTK_TEXT_VIEW(window->widget), FALSE);
-               g_signal_handler_block(window_buffer, window->insert_text_handler);
-
-               /* Retrieve the text that was input */
-               GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
-               GtkTextIter start_iter;
-               GtkTextIter end_iter;
-               gtk_text_buffer_get_iter_at_mark(window_buffer, &start_iter, input_position);
-               gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
-               gchar *inserted_text = gtk_text_buffer_get_text(window_buffer, &start_iter, &end_iter, FALSE);
-
-
-               /* Convert the string from UTF-8 to Latin-1 or Unicode */
-               if(window->input_request_type == INPUT_REQUEST_LINE) {
-                       GError *error = NULL;
-                       gchar *latin1;
-                       gsize bytes_written;
-                       latin1 = g_convert_with_fallback(inserted_text, -1, "ISO-8859-1", "UTF-8", "?", NULL, &bytes_written, &error);
-                       g_free(inserted_text);
-                       
-                       if(latin1 == NULL)
-                       {
-                               error_dialog(NULL, error, "Error during utf8->latin1 conversion: ");
-                               event_throw(evtype_LineInput, window, 0, 0);
-                               return;
-                       }
 
-                       /* Place input in the echo stream */
-                       if(window->echo_stream != NULL) 
-                               glk_put_string_stream(window->echo_stream, latin1);
-
-                       /* Copy the string (but not the NULL at the end) */
-                       memcpy(window->line_input_buffer, latin1, MIN(window->line_input_buffer_max_len, bytes_written-1));
-                       g_free(latin1);
-                       event_throw(evtype_LineInput, window, MIN(window->line_input_buffer_max_len, bytes_written-1), 0);
-               }
-               else if(window->input_request_type == INPUT_REQUEST_LINE_UNICODE) {
-                       gunichar *unicode;
-                       glong items_written;
-                       unicode = g_utf8_to_ucs4_fast(inserted_text, -1, &items_written);
-                       g_free(inserted_text);
-                       
-                       if(unicode == NULL)
-                       {
-                               error_dialog(NULL, NULL, "Error during utf8->unicode conversion");
-                               event_throw(evtype_LineInput, window, 0, 0);
-                               return;
-                       }
-
-                       /* Place input in the echo stream */
-                       // TODO: fixme
-                       // if(window->echo_stream != NULL) 
-                       //      glk_put_string_stream_uni(window->echo_stream, unicode);
-
-                       /* Copy the string (but not the NULL at the end) */
-                       memcpy(window->line_input_buffer_unicode, unicode, MIN(window->line_input_buffer_max_len, items_written)*sizeof(gunichar));
-                       g_free(unicode);
-                       event_throw(evtype_LineInput, window, MIN(window->line_input_buffer_max_len, items_written), 0);
-               }
-               else {
-                       g_warning("%s: Wrong input request type.", __func__);
-               }
+/* Internal function: Callback for signal key-press-event on a text grid window. Only unblocked during line input, so that we can catch the enter key before it inserts an enter into the window. */
+gboolean
+on_text_grid_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win)
+{
+    g_return_val_if_fail(win->type == wintype_TextGrid, FALSE);
+    g_return_val_if_fail(win->input_request_type == INPUT_REQUEST_LINE || win->input_request_type == INPUT_REQUEST_LINE_UNICODE, FALSE);
+    
+    if(event->keyval == GDK_Linefeed || event->keyval == GDK_Return || event->keyval == GDK_KP_Enter)
+    {
+        GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
+        GtkTextIter start_iter, end_iter;
+        g_signal_handler_block(GTK_TEXT_VIEW(win->widget), win->insert_text_handler);
+    
+        /* Determine the bounds of the line input */
+        GtkTextMark *cursor = gtk_text_buffer_get_mark(window_buffer, "cursor_position");
+        gtk_text_buffer_get_iter_at_mark(window_buffer, &start_iter, cursor);
+        gint cursorpos = gtk_text_iter_get_line_offset(&start_iter);
+        gint input_length = MIN(win->width - 1 - cursorpos, win->line_input_buffer_max_len);
+        end_iter = start_iter;
+        gtk_text_iter_set_line_offset(&end_iter, cursorpos + input_length);
+        
+        gchar *inserted_text = g_strchomp( gtk_text_buffer_get_text(window_buffer, &start_iter, &end_iter, FALSE) );
+        
+        /* Make the buffer uneditable again and remove the special tags */
+        gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
+        gtk_text_buffer_get_start_iter(window_buffer, &start_iter);
+        gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
+        gtk_text_buffer_remove_tag_by_name(window_buffer, "uneditable", &start_iter, &end_iter);
+        gtk_text_buffer_remove_tag_by_name(window_buffer, "input_field", &start_iter, &end_iter);
+        
+        end_line_input_request(win, inserted_text);
+        g_free(inserted_text);
+        
+        /* Block the enter key */
+        return TRUE; 
+    }
+    
+    return FALSE;
+}
 
-               window->input_request_type = INPUT_REQUEST_NONE;
+/* Internal function: Callback for signal insert-text on a text buffer window.
+Runs after the default handler has already inserted the text.*/
+void
+after_window_insert_text(GtkTextBuffer *textbuffer, GtkTextIter *location, gchar *text, gint len, winid_t win) 
+{
+       if( strchr(text, '\n') != NULL ) 
+       {
+               /* Remove signal handlers */
+               GtkTextBuffer *window_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
+               g_signal_handler_block(window_buffer, win->insert_text_handler);
+               
+               /* Make the window uneditable again and retrieve the text that was input */
+               gchar *inserted_text;
+               GtkTextIter start_iter, end_iter;
+
+        gtk_text_view_set_editable(GTK_TEXT_VIEW(win->widget), FALSE);
+        GtkTextMark *input_position = gtk_text_buffer_get_mark(window_buffer, "input_position");
+        gtk_text_buffer_get_iter_at_mark(window_buffer, &start_iter, input_position);
+        gtk_text_buffer_get_end_iter(window_buffer, &end_iter);
+        
+        inserted_text = gtk_text_buffer_get_text(window_buffer, &start_iter, &end_iter, FALSE);
+
+        end_line_input_request(win, inserted_text);
+        g_free(inserted_text);
        }
 }