Better debugging for editing

qutebrowser/browser/commands.py

@@ -737,7 +737,11 @@ class CommandDispatcher:
         if elem.isNull():
             raise CommandError("Element vanished while editing!")
         if webelem.is_content_editable(elem):
+            log.misc.debug("Filling element {} via setPlainText.".format(
+                webelem.debug_text(elem)))
             elem.setPlainText(text)
         else:
+            log.misc.debug("Filling element {} via javascript.".format(
+                webelem.debug_text(elem)))
             text = webelem.javascript_escape(text)
             elem.evaluateJavaScript("this.value='{}'".format(text))

qutebrowser/utils/webelem.py

@@ -249,7 +249,7 @@ def is_editable(elem, strict=False):
     # pylint: disable=too-many-return-statements
     roles = ('combobox', 'textbox')
     log.misc.debug("Checking if element is editable: {}".format(
-        compact_text(elem.toOuterXml(),  500)))
+        debug_text(elem)))
     tag = elem.tagName().lower()
     if is_content_editable(elem) and is_writable(elem):
         return True
@@ -279,3 +279,8 @@ def focus_elem(frame):
         frame: The QWebFrame to search in.
     """
     return frame.findFirstElement(SELECTORS[Group.focus])
+
+
+def debug_text(elem):
+    """Get a text based on an element suitable for debug output."""
+    return compact_text(elem.toOuterXml(), 500)