From 779552ee7ddbbde1055c7202e16b9a13c3961988 Mon Sep 17 00:00:00 2001
From: teapotd <teapot404@gmail.com>
Date: Wed, 1 Apr 2020 11:08:02 +0200
Subject: Form constraints validation

---
 components/script/textinput.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'components/script/textinput.rs')

diff --git a/components/script/textinput.rs b/components/script/textinput.rs
index bc4c1c4a6cb..623085ccd19 100644
--- a/components/script/textinput.rs
+++ b/components/script/textinput.rs
@@ -184,6 +184,9 @@ pub struct TextInput<T: ClipboardProvider> {
     /// <https://html.spec.whatwg.org/multipage/#attr-fe-maxlength>
     max_length: Option<UTF16CodeUnits>,
     min_length: Option<UTF16CodeUnits>,
+
+    /// Was last change made by set_content?
+    was_last_change_by_set_content: bool,
 }
 
 /// Resulting action to be taken by the owner of a text input that is handling an event.
@@ -269,6 +272,7 @@ impl<T: ClipboardProvider> TextInput<T> {
             max_length: max_length,
             min_length: min_length,
             selection_direction: selection_direction,
+            was_last_change_by_set_content: true,
         };
         i.set_content(initial);
         i
@@ -300,6 +304,11 @@ impl<T: ClipboardProvider> TextInput<T> {
         self.min_length = length;
     }
 
+    /// Was last edit made by set_content?
+    pub fn was_last_change_by_set_content(&self) -> bool {
+        self.was_last_change_by_set_content
+    }
+
     /// Remove a character at the current editing point
     pub fn delete_char(&mut self, dir: Direction) {
         if self.selection_origin.is_none() || self.selection_origin == Some(self.edit_point) {
@@ -496,6 +505,7 @@ impl<T: ClipboardProvider> TextInput<T> {
         };
 
         self.lines = new_lines;
+        self.was_last_change_by_set_content = false;
         self.clear_selection();
         self.assert_ok_selection();
     }
@@ -1035,6 +1045,7 @@ impl<T: ClipboardProvider> TextInput<T> {
             vec![content]
         };
 
+        self.was_last_change_by_set_content = true;
         self.edit_point = self.edit_point.constrain_to(&self.lines);
 
         if let Some(origin) = self.selection_origin {
-- 
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