Bug 1679461 - Use SetSelectionRange in Select(), regardless of focus state r=masayuki

SelectAll() also is no-op without a frame, so this replaces it with SetSelectionRange.

Differential Revision: https://phabricator.services.mozilla.com/D98184

dom/html/HTMLInputElement.cpp

@@ -3020,17 +3020,11 @@ void HTMLInputElement::Select() {
     return;
   }
 
-  // XXX Bug?  We have to give the input focus before contents can be
+  TextControlState* state = GetEditorState();
-  // selected
+  MOZ_ASSERT(state, "Single line text controls are expected to have a state");
 
-  FocusTristate state = FocusState();
+  if (FocusState() != eUnfocusable) {
-  if (state == eUnfocusable) {
+    RefPtr<nsFrameSelection> fs = state->GetConstFrameSelection();
-    return;
-  }
-
-  TextControlState* tes = GetEditorState();
-  if (tes) {
-    RefPtr<nsFrameSelection> fs = tes->GetConstFrameSelection();
     if (fs && fs->MouseDownRecorded()) {
       // This means that we're being called while the frame selection has a
       // mouse down event recorded to adjust the caret during the mouse up
@@ -3039,27 +3033,24 @@ void HTMLInputElement::Select() {
       // select() call takes effect.
       fs->SetDelayedCaretData(nullptr);
     }
-  }
 
-  nsFocusManager* fm = nsFocusManager::GetFocusManager();
+    if (RefPtr<nsFocusManager> fm = nsFocusManager::GetFocusManager()) {
-
-  RefPtr<nsPresContext> presContext = GetPresContext(eForComposedDoc);
-  if (state == eInactiveWindow) {
-    if (fm) fm->SetFocus(this, nsIFocusManager::FLAG_NOSCROLL);
-    SelectAll(presContext);
-    return;
-  }
-
-  DispatchSelectEvent(presContext);
-  if (fm) {
       fm->SetFocus(this, nsIFocusManager::FLAG_NOSCROLL);
 
-    // ensure that the element is actually focused
+      // A focus event handler may change the type attribute, which will destroy
-    if (this == fm->GetFocusedElement()) {
+      // the previous state object.
-      // Now Select all the text!
+      state = GetEditorState();
-      SelectAll(presContext);
+      if (!state) {
+        return;
       }
     }
+  }
+
+  // Directly call TextControlState::SetSelectionRange because
+  // HTMLInputElement::SetSelectionRange only applies to fewer types
+  state->SetSelectionRange(0, UINT32_MAX,
+                           nsITextControlFrame::SelectionDirection::eNone,
+                           IgnoredErrorResult());
 }
 
 void HTMLInputElement::DispatchSelectEvent(nsPresContext* aPresContext) {

dom/html/HTMLInputElement.h

@@ -670,7 +670,7 @@ class HTMLInputElement final : public TextControlElement,
 
   already_AddRefed<nsINodeList> GetLabels();
 
-  void Select();
+  MOZ_CAN_RUN_SCRIPT void Select();
 
   Nullable<uint32_t> GetSelectionStart(ErrorResult& aRv);
   MOZ_CAN_RUN_SCRIPT void SetSelectionStart(const Nullable<uint32_t>& aValue,

dom/html/HTMLTextAreaElement.cpp

@@ -132,37 +132,14 @@ nsresult HTMLTextAreaElement::Clone(dom::NodeInfo* aNodeInfo,
 // nsIContent
 
 void HTMLTextAreaElement::Select() {
-  // XXX Bug?  We have to give the input focus before contents can be
+  if (FocusState() != eUnfocusable) {
-  // selected
+    if (RefPtr<nsFocusManager> fm = nsFocusManager::GetFocusManager()) {
-
-  FocusTristate state = FocusState();
-  if (state == eUnfocusable) {
-    return;
-  }
-
-  nsFocusManager* fm = nsFocusManager::GetFocusManager();
-
-  RefPtr<nsPresContext> presContext = GetPresContext(eForComposedDoc);
-  if (state == eInactiveWindow) {
-    if (fm) fm->SetFocus(this, nsIFocusManager::FLAG_NOSCROLL);
-    SelectAll(presContext);
-    return;
-  }
-
-  WidgetGUIEvent event(true, eFormSelect, nullptr);
-  // XXXbz HTMLInputElement guards against this reentering; shouldn't we?
-  EventDispatcher::Dispatch(static_cast<nsIContent*>(this), presContext,
-                            &event);
-
-  if (fm) {
       fm->SetFocus(this, nsIFocusManager::FLAG_NOSCROLL);
+    }
+  }
 
-    // ensure that the element is actually focused
+  SetSelectionRange(0, UINT32_MAX, mozilla::dom::Optional<nsAString>(),
-    if (this == fm->GetFocusedElement()) {
+                    IgnoredErrorResult());
-      // Now Select all the text!
-      SelectAll(presContext);
-    }
-  }
 }
 
 NS_IMETHODIMP

dom/html/HTMLTextAreaElement.h

@@ -254,7 +254,7 @@ class HTMLTextAreaElement final : public TextControlElement,
   // via bindings.
   void SetCustomValidity(const nsAString& aError);
 
-  void Select();
+  MOZ_CAN_RUN_SCRIPT void Select();
   Nullable<uint32_t> GetSelectionStart(ErrorResult& aError);
   MOZ_CAN_RUN_SCRIPT void SetSelectionStart(
       const Nullable<uint32_t>& aSelectionStart, ErrorResult& aError);

testing/web-platform/tests/html/semantics/forms/textfieldselection/selection.html

@@ -95,12 +95,9 @@
       // to the character that immediately follows the text entry cursor.
       assert_equals(el.selectionStart, el.value.length,
                     "SelectionStart offset without selection in " + el.id);
-      if (!el.parentNode) {
-        return;
-      }
       el.select();
       assert_equals(el.selectionStart, 0, "SelectionStart offset");
-      el.parentNode.removeChild(el);
+      el.remove();
     }, "test SelectionStart offset for input that is " +
          (append ? "appended" : " not appended"));
   }
@@ -112,12 +109,9 @@
       // to the character that immediately follows the text entry cursor.
       assert_equals(el.selectionStart, el.value.length,
                     "SelectionStart offset without selection in " + el.id);
-      if (!el.parentNode) {
-        return;
-      }
       el.select();
       assert_equals(el.selectionStart, 0, "SelectionStart offset");
-      el.parentNode.removeChild(el);
+      el.remove();
     }, "test SelectionStart offset for textarea that is " +
          (append ? "appended" : " not appended"));
   }
@@ -129,12 +123,9 @@
       // to the character that immediately follows the text entry cursor.
       assert_equals(el.selectionEnd, el.value.length,
                     "SelectionEnd offset without selection in " + el.id);
-      if (!el.parentNode) {
-        return;
-      }
       el.select();
       assert_equals(el.selectionEnd, el.value.length, "SelectionEnd offset");
-      el.parentNode.removeChild(el);
+      el.remove();
     }, "test SelectionEnd offset for input that is " +
          (append ? "appended" : " not appended"));
   }
@@ -147,12 +138,9 @@
       // to the character that immediately follows the text entry cursor.
       assert_equals(el.selectionEnd, el.value.length,
                     "SelectionEnd offset without selection in " + el.id);
-      if (!el.parentNode) {
-        return;
-      }
       el.select();
       assert_equals(el.selectionEnd, el.value.length, "SelectionEnd offset");
-      el.parentNode.removeChild(el);
+      el.remove();
     }, "test SelectionEnd offset for textarea that is " +
          (append ? "appended" : " not appended"));
   }