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use std::hash::Hash;
use std::any::TypeId;
use winapi::{HWND, HFONT, WPARAM};
use user32::SendMessageW;
use ui::Ui;
use controls::{Control, ControlT, ControlType, AnyHandle};
use error::Error;
use events::Event;
#[derive(Clone)]
pub struct TextBoxT<S1: Clone+Into<String>, ID: Hash+Clone> {
pub text: S1,
pub position: (i32, i32),
pub size: (u32, u32),
pub visible: bool,
pub disabled: bool,
pub readonly: bool,
pub limit: u32,
pub scrollbars: (bool, bool),
pub parent: ID,
pub font: Option<ID>,
}
impl<S1: Clone+Into<String>, ID: Hash+Clone> ControlT<ID> for TextBoxT<S1, ID> {
fn type_id(&self) -> TypeId { TypeId::of::<TextBox>() }
fn events(&self) -> Vec<Event> {
vec![Event::Destroyed, Event::Focus, Event::Char, Event::KeyDown, Event::KeyUp, Event::MouseDown, Event::MouseUp,
Event::ValueChanged, Event::Moved, Event::Resized, Event::Raw]
}
fn build(&self, ui: &Ui<ID>) -> Result<Box<Control>, Error> {
use low::window_helper::{WindowParams, build_window, set_window_font, handle_of_window, handle_of_font};
use low::defs::{ES_AUTOHSCROLL, ES_AUTOVSCROLL, ES_READONLY, EM_LIMITTEXT, ES_MULTILINE};
use winapi::{DWORD, WS_VISIBLE, WS_DISABLED, WS_CHILD, WS_BORDER, WS_HSCROLL, WS_VSCROLL};
let flags: DWORD = WS_CHILD | WS_BORDER | ES_AUTOHSCROLL | ES_MULTILINE | ES_AUTOVSCROLL |
if self.readonly { ES_READONLY } else { 0 } |
if self.visible { WS_VISIBLE } else { 0 } |
if self.scrollbars.0 { WS_HSCROLL } else { 0 } |
if self.scrollbars.1 { WS_VSCROLL } else { 0 } |
if self.disabled { WS_DISABLED } else { 0 };
let parent = match handle_of_window(ui, &self.parent, "The parent of a textinput must be a window-like control.") {
Ok(h) => h,
Err(e) => { return Err(e); }
};
let font_handle: Option<HFONT> = match self.font.as_ref() {
Some(font_id) =>
match handle_of_font(ui, &font_id, "The font of a button must be a font resource.") {
Ok(h) => Some(h),
Err(e) => { return Err(e); }
},
None => None
};
let params = WindowParams {
title: self.text.clone().into(),
class_name: "EDIT",
position: self.position.clone(),
size: self.size.clone(),
flags: flags,
ex_flags: Some(0),
parent: parent
};
match unsafe{ build_window(params) } {
Ok(h) => {
unsafe{
set_window_font(h, font_handle, true);
SendMessageW(h, EM_LIMITTEXT, self.limit as WPARAM, 0);
};
Ok( Box::new(TextBox{handle: h}) )
},
Err(e) => Err(Error::System(e))
}
}
}
pub struct TextBox {
handle: HWND
}
impl TextBox {
pub fn set_readonly(&self, readonly: bool) {
use low::window_helper::{set_window_long, get_window_long};
use low::defs::ES_READONLY;
use winapi::GWL_STYLE;
let old_style = get_window_long(self.handle, GWL_STYLE) as usize;
if readonly {
set_window_long(self.handle, GWL_STYLE, old_style|(ES_READONLY as usize));
} else {
set_window_long(self.handle, GWL_STYLE, old_style&(!ES_READONLY as usize) );
}
}
pub fn get_readonly(&self) -> bool {
use low::window_helper::get_window_long;
use low::defs::ES_READONLY;
use winapi::GWL_STYLE;
let style = get_window_long(self.handle, GWL_STYLE) as u32;
(style & ES_READONLY) == ES_READONLY
}
pub fn set_limit(&self, limit: u32) {
use low::defs::EM_LIMITTEXT;
unsafe{ SendMessageW(self.handle, EM_LIMITTEXT, limit as WPARAM, 0); }
}
pub fn get_limit(&self) -> u32 {
use low::defs::EM_GETLIMITTEXT;
unsafe{ SendMessageW(self.handle, EM_GETLIMITTEXT, 0, 0) as u32 }
}
pub fn get_text(&self) -> String { unsafe{ ::low::window_helper::get_window_text(self.handle) } }
pub fn set_text<'a>(&self, text: &'a str) { unsafe{ ::low::window_helper::set_window_text(self.handle, text); } }
pub fn get_visibility(&self) -> bool { unsafe{ ::low::window_helper::get_window_visibility(self.handle) } }
pub fn set_visibility(&self, visible: bool) { unsafe{ ::low::window_helper::set_window_visibility(self.handle, visible); }}
pub fn get_position(&self) -> (i32, i32) { unsafe{ ::low::window_helper::get_window_position(self.handle) } }
pub fn set_position(&self, x: i32, y: i32) { unsafe{ ::low::window_helper::set_window_position(self.handle, x, y); }}
pub fn get_size(&self) -> (u32, u32) { unsafe{ ::low::window_helper::get_window_size(self.handle) } }
pub fn set_size(&self, w: u32, h: u32) { unsafe{ ::low::window_helper::set_window_size(self.handle, w, h, false); } }
pub fn get_enabled(&self) -> bool { unsafe{ ::low::window_helper::get_window_enabled(self.handle) } }
pub fn set_enabled(&self, e:bool) { unsafe{ ::low::window_helper::set_window_enabled(self.handle, e); } }
}
impl Control for TextBox {
fn handle(&self) -> AnyHandle {
AnyHandle::HWND(self.handle)
}
fn control_type(&self) -> ControlType {
ControlType::TextBox
}
fn free(&mut self) {
use user32::DestroyWindow;
unsafe{ DestroyWindow(self.handle) };
}
}