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// Copyright 2016 Avraham Weinstock
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use common::*;
use objc::runtime::{Class, Object};
use objc_foundation::{INSArray, INSObject, INSString};
use objc_foundation::{NSArray, NSDictionary, NSObject, NSString};
use objc_id::{Id, Owned};
use std::error::Error;
use std::mem::transmute;
pub struct OSXClipboardContext {
pasteboard: Id<Object>,
}
// required to bring NSPasteboard into the path of the class-resolver
#[link(name = "AppKit", kind = "framework")]
extern "C" {}
impl OSXClipboardContext {
pub fn new() -> Result<OSXClipboardContext, Box<dyn Error>> {
let cls = Class::get("NSPasteboard").ok_or("Class::get(\"NSPasteboard\")")?;
let pasteboard: *mut Object = unsafe { msg_send![cls, generalPasteboard] };
if pasteboard.is_null() {
return Err("NSPasteboard#generalPasteboard returned null".into());
}
let pasteboard: Id<Object> = unsafe { Id::from_ptr(pasteboard) };
Ok(OSXClipboardContext { pasteboard })
}
}
impl ClipboardProvider for OSXClipboardContext {
fn get_contents(&mut self) -> Result<String, Box<dyn Error>> {
let string_class: Id<NSObject> = {
let cls: Id<Class> = unsafe { Id::from_ptr(class("NSString")) };
unsafe { transmute(cls) }
};
let classes: Id<NSArray<NSObject, Owned>> = NSArray::from_vec(vec![string_class]);
let options: Id<NSDictionary<NSObject, NSObject>> = NSDictionary::new();
let string_array: Id<NSArray<NSString>> = unsafe {
let obj: *mut NSArray<NSString> =
msg_send![self.pasteboard, readObjectsForClasses:&*classes options:&*options];
if obj.is_null() {
return Err("pasteboard#readObjectsForClasses:options: returned null".into());
}
Id::from_ptr(obj)
};
if string_array.count() == 0 {
Err("pasteboard#readObjectsForClasses:options: returned empty".into())
} else {
Ok(string_array[0].as_str().to_owned())
}
}
fn set_contents(&mut self, data: String) -> Result<(), Box<dyn Error>> {
let string_array = NSArray::from_vec(vec![NSString::from_str(&data)]);
let _: usize = unsafe { msg_send![self.pasteboard, clearContents] };
let success: bool = unsafe { msg_send![self.pasteboard, writeObjects: string_array] };
return if success {
Ok(())
} else {
Err("NSPasteboard#writeObjects: returned false".into())
};
}
}
// this is a convenience function that both cocoa-rs and
// glutin define, which seems to depend on the fact that
// Option::None has the same representation as a null pointer
#[inline]
pub fn class(name: &str) -> *mut Class {
unsafe { transmute(Class::get(name)) }
}
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