avm1: Implement TextField.removeTextField

core/src/avm1/globals/display_object.rs

@@ -19,6 +19,10 @@ pub const AVM_DEPTH_BIAS: i32 = 16384;
 /// What is the derivation of this number...?
 pub const AVM_MAX_DEPTH: i32 = 2_130_706_428;
 
+/// The maximum depth that the AVM will allow you to remove clips from.
+/// What is the derivation of this number...?
+pub const AVM_MAX_REMOVE_DEPTH: i32 = 2_130_706_416;
+
 macro_rules! with_display_object {
     ( $gc_context: ident, $object:ident, $fn_proto: expr, $($name:expr => $fn:expr),* ) => {{
         $(

core/src/avm1/globals/movie_clip.rs

@@ -3,7 +3,9 @@
 use crate::avm1::activation::Activation;
 use crate::avm1::error::Error;
 use crate::avm1::function::{Executable, FunctionObject};
-use crate::avm1::globals::display_object::{self, AVM_DEPTH_BIAS, AVM_MAX_DEPTH};
+use crate::avm1::globals::display_object::{
+    self, AVM_DEPTH_BIAS, AVM_MAX_DEPTH, AVM_MAX_REMOVE_DEPTH,
+};
 use crate::avm1::globals::matrix::gradient_object_to_matrix;
 use crate::avm1::property::Attribute::*;
 use crate::avm1::{AvmString, Object, ScriptObject, TObject, Value};
@@ -867,7 +869,7 @@ pub fn remove_movie_clip<'gc>(
     // Generally this prevents you from removing non-dynamically created clips,
     // although you can get around it with swapDepths.
     // TODO: Figure out the derivation of this range.
-    if depth >= AVM_DEPTH_BIAS && depth < 2_130_706_416 {
+    if depth >= AVM_DEPTH_BIAS && depth < AVM_MAX_REMOVE_DEPTH {
         // Need a parent to remove from.
         let mut parent = if let Some(parent) = movie_clip.parent().and_then(|o| o.as_movie_clip()) {
             parent

core/src/avm1/globals/text_field.rs

@@ -1,7 +1,7 @@
 use crate::avm1::activation::Activation;
 use crate::avm1::error::Error;
 use crate::avm1::function::{Executable, FunctionObject};
-use crate::avm1::globals::display_object;
+use crate::avm1::globals::display_object::{self, AVM_DEPTH_BIAS, AVM_MAX_REMOVE_DEPTH};
 use crate::avm1::property::Attribute::*;
 use crate::avm1::{AvmString, Object, ScriptObject, TObject, Value};
 use crate::avm_error;
@@ -507,7 +507,8 @@ pub fn create_proto<'gc>(
         "setNewTextFormat" => set_new_text_format,
         "getTextFormat" => get_text_format,
         "setTextFormat" => set_text_format,
-        "replaceText" => replace_text
+        "replaceText" => replace_text,
+        "removeTextField" => remove_text_field
     );
 
     with_text_field_props!(
@@ -861,3 +862,24 @@ pub fn set_type<'gc>(
     };
     Ok(())
 }
+
+fn remove_text_field<'gc>(
+    text_field: EditText<'gc>,
+    activation: &mut Activation<'_, 'gc, '_>,
+    _args: &[Value<'gc>],
+) -> Result<Value<'gc>, Error<'gc>> {
+    let depth = text_field.depth();
+
+    if depth >= AVM_DEPTH_BIAS && depth < AVM_MAX_REMOVE_DEPTH {
+        // Need a parent to remove from.
+        let mut parent = if let Some(parent) = text_field.parent().and_then(|o| o.as_movie_clip()) {
+            parent
+        } else {
+            return Ok(Value::Undefined);
+        };
+
+        parent.remove_child_from_avm(&mut activation.context, text_field.into());
+    }
+
+    Ok(Value::Undefined)
+}

core/tests/swfs/avm1/textfield_properties/output.txt

@@ -6,3 +6,9 @@ input
 dynamic
 // txt.type = 'invalid':
 dynamic
+
+// createTextField('txt2', 0, 0, 0, 100, 100)
+_level0.txt2
+// txt2.removeTextField()
+undefined
+