minicrossterm/docs/UpgradeManual.md

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## Upgrade crossterm to 0.4.0
***WARNING***
This new version contains some cool features but to get those features working I needed to add some user API braking changes.
I really did not want to do this but it had to be done for some reasons.
#### 1. You need to pass a reference to an `Screen` to the modules: `cursor(), color(), terminal()`
```
use crossterm::terminal::terminal;
use crossterm::cursor::cursor;
use crossterm::style::color;
/// Old situation
use crossterm::Context;
let context: Rc<Context> = Context::new();
let cursor = cursor(&context);
let terminal = terminal(&context);
let color = color(&context);
/// new situation
use crossterm::Context;
let screen: Screen = Screen::default();
let cursor = cursor(&screen);
let terminal = terminal(&screen);
let color = color(&screen);
```
#### 2. The `::crossterm::Crossterm::paint()` function does not exits anymore like before:
Instead you could do it like the following:
```
use crossterm::Crossterm;
use crossterm::style::{Color, input, style};
// 1: use the `Crossterm` type
let crossterm = Crossterm::new();
let styled_object = crossterm.style("Red font on Black background").with(Color::Red).on(Color::Black);
styled_object.paint(&screen);
// 2: use the `Terminal` type
let styled_object = style("Red font on Black background").with(Color::Red).on(Color::Black);
styled_object.paint(&screen);
```
#### 3. Alternate Screen and Raw Screen
Also I have changed how the alternate and raw screen are working.
```
// could not be used any more
::crossterm::AlternateScreen::from();
// cannot put any Write into raw mode.
::std::io::Write::into_raw_mode()
```
This now should be done with the `Screen` type like:
```
use crossterm::Screen;
use crossterm::cursor::cursor;
// this will create a default screen.
let screen = Screen::default();
// this will create a new screen with raw modes enabled.
let screen = Screen::new(true);
// false specifies whether the alternate screen should be in raw modes.
if let Ok(alternate) = screen.enable_alternate_modes(false)
{
let cursor = cursor(&alternate.screen);
}
```
#### Other
- ::crossterm::Crossterm::write() is gone.
- Context type is removed
- StateManager is removed
- ScreenManager type is renamed to Stdout.
## Upgrade crossterm 0.2.1 to 0.3.0
***WARNING***
This new version contains some cool features but to get those features working I needed to add some user API braking changes.
I really did not want to do this but it had to be done for some reasons. Check `LINK (updates crossterm version)` for more info about why.
First thing that has changed is that you need to pass a reference to an `Rc<Context>` to the modules: `cursor(), color(), terminal()`
```
use crossterm::terminal::terminal;
use crossterm::cursor::cursor;
use crossterm::style::color;
/// Old situation
let cursor = cursor();
let terminal = terminal();
let color = color();
/// new situation
use crossterm::Context;
let context: Rc<Context> = Context::new();
let cursor = cursor(&context);
let terminal = terminal(&context);
let color = color(&context);
```
Also the `::crossterm::style::paint()` function does not exits anymore like before:
Instead you could do it like the following:
```
use crossterm::Crossterm;
use crossterm::style::Color;
use crossterm::terminal::terminal;
// 1: use the `Crossterm` type
let crossterm = Crossterm::new();
let mut color = crossterm.paint("Red on Blue").with(Color::Red).on(Color::Blue);
// 2: use the `Terminal` type
let context: Rc<Context> = Context::new();
let terminal = terminal(&context).paint("Red on Blue").with(Color::Red).on(Color::Blue);
```
And you do not need `mut` for a lot of function calls anymore.
## Upgrade crossterm 0.2 to 0.2.1
Namespaces:
I have changed the namespaces. I found the namsespaces to long so I have shortened them like the following:
```
Old: crossterm::crossterm_style
New: crossterm::style
Old: crossterm::crossterm_terminal
New: crossterm::terminal
Old: crossterm::crossterm_cursor
New: crossterm::cursor
```
Method names that changed [Issue 4](https://github.com/TimonPost/crossterm/issues/4):
```
Old: ::crossterm::crossterm_cursor::get();
New: ::crossterm::cursor::cursor();
Old: ::crossterm::crossterm_terminal::get();
New: ::crossterm::terminal::terminal();
Old: ::crossterm::crossterm_style::color::get();
New: ::crossterm::style::color::color();
```