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Merge pull request #5 from MerlinDE/TextField_event_handler

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Standard macOS event handlers for TextField
This commit is contained in:
Ryan McGrath 2021-03-17 21:43:46 -07:00 committed by GitHub
parent 400e763160 a85f41be79
commit ce1bca84ce
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 137 additions and 33 deletions
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87
src/input/macos.rs
View file

@ -11,14 +11,63 @@ use std::sync::Once;
use objc::declare::ClassDecl;
use objc::runtime::{Class, Object, Sel, BOOL};
use objc::{class, sel, sel_impl};
use objc::{class, msg_send, sel, sel_impl};
use objc_id::Id;
use crate::foundation::{id, YES, NO, NSUInteger};
use crate::dragdrop::DragInfo;
use crate::input::{TEXTFIELD_DELEGATE_PTR, TextFieldDelegate};
use crate::foundation::{id, NSString, NSUInteger, NO, YES};
use crate::input::{TextFieldDelegate, TEXTFIELD_DELEGATE_PTR};
use crate::utils::load;
/// Called when editing this text field has ended (e.g. user pressed enter).
extern "C" fn text_did_end_editing<T: TextFieldDelegate>(this: &mut Object, _: Sel, info: id) {
let view = load::<T>(this, TEXTFIELD_DELEGATE_PTR);
view.text_did_end_editing({
let s = NSString::wrap(unsafe { msg_send![this, stringValue] });
s.to_str().to_string()
});
}
extern "C" fn text_did_begin_editing<T: TextFieldDelegate>(this: &mut Object, _: Sel, info: id) {
let view = load::<T>(this, TEXTFIELD_DELEGATE_PTR);
view.text_did_begin_editing({
let s = NSString::wrap(unsafe { msg_send![this, stringValue] });
s.to_str().to_string()
});
}
extern "C" fn text_did_change<T: TextFieldDelegate>(this: &mut Object, _: Sel, info: id) {
let view = load::<T>(this, TEXTFIELD_DELEGATE_PTR);
view.text_did_change({
let s = NSString::wrap(unsafe { msg_send![this, stringValue] });
s.to_str().to_string()
});
}
extern "C" fn text_should_begin_editing<T: TextFieldDelegate>(
this: &mut Object,
_: Sel,
info: id,
) -> bool {
let view = load::<T>(this, TEXTFIELD_DELEGATE_PTR);
view.text_should_begin_editing({
let s = NSString::wrap(unsafe { msg_send![this, stringValue] });
s.to_str().to_string()
})
}
extern "C" fn text_should_end_editing<T: TextFieldDelegate>(
this: &mut Object,
_: Sel,
info: id,
) -> bool {
let view = load::<T>(this, TEXTFIELD_DELEGATE_PTR);
view.text_should_end_editing({
let s = NSString::wrap(unsafe { msg_send![this, stringValue] });
s.to_str().to_string()
})
}
/// Injects an `NSTextField` subclass. This is used for the default views that don't use delegates - we
/// have separate classes here since we don't want to waste cycles on methods that will never be
/// used if there's no delegates.
@ -42,17 +91,37 @@ pub(crate) fn register_view_class_with_delegate<T: TextFieldDelegate>() -> *cons
static INIT: Once = Once::new();
INIT.call_once(|| unsafe {
let superclass = class!(NSView);
let superclass = class!(NSTextField);
// let superclass = class!(NSView);
let mut decl = ClassDecl::new("RSTTextInputFieldWithDelegate", superclass).unwrap();
// A pointer to the "view controller" on the Rust side. It's expected that this doesn't
// move.
decl.add_ivar::<usize>(TEXTFIELD_DELEGATE_PTR);
decl.add_ivar::<usize>(TEXTFIELD_DELEGATE_PTR);
decl.add_method(
sel!(textDidEndEditing:),
text_did_end_editing::<T> as extern "C" fn(&mut Object, _, _),
);
decl.add_method(
sel!(textDidBeginEditing:),
text_did_begin_editing::<T> as extern "C" fn(&mut Object, _, _),
);
decl.add_method(
sel!(textDidChange:),
text_did_change::<T> as extern "C" fn(&mut Object, _, _),
);
decl.add_method(
sel!(textShouldBeginEditing:),
text_should_begin_editing::<T> as extern "C" fn(&mut Object, Sel, *mut Object) -> bool,
);
decl.add_method(
sel!(textShouldEndEditing:),
text_should_end_editing::<T> as extern "C" fn(&mut Object, Sel, *mut Object) -> bool,
);
VIEW_CLASS = decl.register();
});
unsafe {
VIEW_CLASS
}
unsafe { VIEW_CLASS }
}

50
src/input/mod.rs
View file

@ -3,7 +3,7 @@
//! the implementation.
//!
//! TextFields implement Autolayout, which enable you to specify how things should appear on the screen.
//!
//!
//! ```rust,no_run
//! use cacao::color::rgb;
//! use cacao::layout::{Layout, LayoutConstraint};
@ -16,7 +16,7 @@
//! label: TextField,
//! window: Window
//! }
//!
//!
//! impl WindowDelegate for AppWindow {
//! fn did_load(&mut self, window: Window) {
//! window.set_minimum_content_size(300., 300.);
@ -40,13 +40,13 @@
//!
//! For more information on Autolayout, view the module or check out the examples folder.
use objc_id::ShareId;
use objc::runtime::{Class, Object};
use objc::{msg_send, sel, sel_impl};
use objc_id::ShareId;
use crate::foundation::{id, nil, YES, NO, NSArray, NSInteger, NSString};
use crate::color::Color;
use crate::layout::{Layout, LayoutAnchorX, LayoutAnchorY, LayoutAnchorDimension};
use crate::foundation::{id, nil, NSArray, NSInteger, NSString, NO, YES};
use crate::layout::{Layout, LayoutAnchorDimension, LayoutAnchorX, LayoutAnchorY};
use crate::text::{Font, TextAlign};
#[cfg(target_os = "macos")]
@ -70,20 +70,20 @@ pub use traits::TextFieldDelegate;
pub(crate) static TEXTFIELD_DELEGATE_PTR: &str = "rstTextFieldDelegatePtr";
/// A helper method for instantiating view classes and applying default settings to them.
fn allocate_view(registration_fn: fn() -> *const Class) -> id {
fn allocate_view(registration_fn: fn() -> *const Class) -> id {
unsafe {
let view: id = msg_send![registration_fn(), new];
let _: () = msg_send![view, setTranslatesAutoresizingMaskIntoConstraints:NO];
let _: () = msg_send![view, setTranslatesAutoresizingMaskIntoConstraints: NO];
#[cfg(target_os = "macos")]
let _: () = msg_send![view, setWantsLayer:YES];
let _: () = msg_send![view, setWantsLayer: YES];
view
view
}
}
/// A clone-able handler to an `NSTextField/UITextField` reference in the
/// A clone-able handler to an `NSTextField/UITextField` reference in the
/// Objective-C runtime.
#[derive(Debug)]
pub struct TextField<T = ()> {
@ -115,7 +115,7 @@ pub struct TextField<T = ()> {
pub center_x: LayoutAnchorX,
/// A pointer to the Objective-C runtime center Y layout constraint.
pub center_y: LayoutAnchorY
pub center_y: LayoutAnchorY,
}
impl Default for TextField {
@ -125,7 +125,7 @@ impl Default for TextField {
}
impl TextField {
/// Returns a default `TextField`, suitable for
/// Returns a default `TextField`, suitable for
pub fn new() -> Self {
let view = allocate_view(register_view_class);
@ -144,18 +144,22 @@ impl TextField {
}
}
impl<T> TextField<T> where T: TextFieldDelegate + 'static {
impl<T> TextField<T>
where
T: TextFieldDelegate + 'static,
{
/// Initializes a new TextField with a given `TextFieldDelegate`. This enables you to respond to events
/// and customize the view as a module, similar to class-based systems.
pub fn with(delegate: T) -> TextField<T> {
let delegate = Box::new(delegate);
let mut delegate = Box::new(delegate);
let label = allocate_view(register_view_class_with_delegate::<T>);
unsafe {
//let view: id = msg_send![register_view_class_with_delegate::<T>(), new];
//let _: () = msg_send![view, setTranslatesAutoresizingMaskIntoConstraints:NO];
let ptr: *const T = &*delegate;
(&mut *label).set_ivar(TEXTFIELD_DELEGATE_PTR, ptr as usize);
// let _: () = msg_send![self., setDelegate: label];
};
let mut label = TextField {
@ -171,7 +175,7 @@ impl<T> TextField<T> where T: TextFieldDelegate + 'static {
objc: unsafe { ShareId::from_ptr(label) },
};
//(&mut delegate).did_load(label.clone_as_handle());
(&mut delegate).did_load(label.clone_as_handle());
label.delegate = Some(delegate);
label
}
@ -193,15 +197,13 @@ impl<T> TextField<T> {
height: self.height.clone(),
center_x: self.center_x.clone(),
center_y: self.center_y.clone(),
objc: self.objc.clone()
objc: self.objc.clone(),
}
}
/// Grabs the value from the textfield and returns it as an owned String.
pub fn get_value(&self) -> String {
let value = NSString::wrap(unsafe {
msg_send![&*self.objc, stringValue]
});
let value = NSString::wrap(unsafe { msg_send![&*self.objc, stringValue] });
value.to_str().to_string()
}
@ -209,11 +211,11 @@ impl<T> TextField<T> {
/// Call this to set the background color for the backing layer.
pub fn set_background_color(&self, color: Color) {
let bg = color.into_platform_specific_color();
unsafe {
let cg: id = msg_send![bg, CGColor];
let layer: id = msg_send![&*self.objc, layer];
let _: () = msg_send![layer, setBackgroundColor:cg];
let _: () = msg_send![layer, setBackgroundColor: cg];
}
}
@ -229,7 +231,7 @@ impl<T> TextField<T> {
pub fn set_text_alignment(&self, alignment: TextAlign) {
unsafe {
let alignment: NSInteger = alignment.into();
let _: () = msg_send![&*self.objc, setAlignment:alignment];
let _: () = msg_send![&*self.objc, setAlignment: alignment];
}
}
@ -249,7 +251,7 @@ impl<T> Layout for TextField<T> {
let backing_node = view.get_backing_node();
unsafe {
let _: () = msg_send![&*self.objc, addSubview:backing_node];
let _: () = msg_send![&*self.objc, addSubview: backing_node];
}
}
}

33
src/input/traits.rs
View file

@ -1,4 +1,37 @@
//! Various traits used for Labels.
use crate::input::TextField;
pub trait TextFieldDelegate {
/// Used to cache subclass creations on the Objective-C side.
/// You can just set this to be the name of your view type. This
/// value *must* be unique per-type.
const NAME: &'static str;
/// You should rarely (read: probably never) need to implement this yourself.
/// It simply acts as a getter for the associated `NAME` const on this trait.
fn subclass_name(&self) -> &'static str {
Self::NAME
}
/// Posts a notification when the text is no longer in edit mode.
fn text_did_end_editing(&self, _value: String) {}
/// Requests permission to begin editing a text object.
fn text_should_begin_editing(&self, _value: String) -> bool {
true
}
/// Posts a notification to the default notification center that the text is about to go into edit mode.
fn text_did_begin_editing(&self, _value: String) {}
/// Posts a notification when the text changes, and forwards the message to the text field’s cell if it responds.
fn text_did_change(&self, _value: String) {}
/// Performs validation on the text field’s new value.
fn text_should_end_editing(&self, _value: String) -> bool {
true
}
fn did_load(&mut self, view: TextField) {}
}