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use std::collections::HashMap;
use mg_settings::{
self,
Command,
EnumFromStr,
EnumMetaData,
ParseResult,
SettingCompletion,
SpecialCommand,
};
use mg_settings::errors::Error;
use mg_settings::errors::ErrorType::{MissingArgument, NoCommand, Parse, UnknownCommand};
use mg_settings::Command::{App, Custom, Map, Set, Unmap};
use app::{
Mg,
Mode,
COMPLETE_NEXT_COMMAND,
COMPLETE_PREVIOUS_COMMAND,
COPY,
CUT,
ENTRY_DELETE_NEXT_CHAR,
ENTRY_DELETE_NEXT_WORD,
ENTRY_DELETE_PREVIOUS_WORD,
ENTRY_END,
ENTRY_NEXT_CHAR,
ENTRY_NEXT_WORD,
ENTRY_PREVIOUS_CHAR,
ENTRY_PREVIOUS_WORD,
ENTRY_SMART_HOME,
PASTE,
PASTE_SELECTION,
};
use app::ActivationType::{self, Final};
use app::Msg::{
self,
CustomCommand,
EnterNormalModeAndReset,
};
use app::status_bar::Msg::{
Copy,
Cut,
DeleteNextChar,
DeleteNextWord,
DeletePreviousWord,
End,
NextChar,
NextWord,
Paste,
PasteSelection,
PreviousChar,
PreviousWord,
SmartHome,
};
use app::ShortcutCommand::{self, Complete, Incomplete};
use completion::completion_view::Msg::{SelectNext, SelectPrevious};
impl<COMM, SETT> Mg<COMM, SETT>
where COMM: Clone + EnumFromStr + EnumMetaData + SpecialCommand + 'static,
SETT: Default + EnumMetaData + mg_settings::settings::Settings + SettingCompletion + 'static,
{
pub fn action_to_command(&self, action: &str) -> ShortcutCommand {
if let Some(':') = action.chars().next() {
if let Some(index) = action.find("<Enter>") {
Complete(action[1..index].to_string())
}
else {
Incomplete(action[1..].to_string())
}
}
else {
Complete(action.to_string())
}
}
fn app_command(&self, command: &str) {
match command {
COMPLETE_NEXT_COMMAND => self.completion_view.emit(SelectNext),
COMPLETE_PREVIOUS_COMMAND => self.completion_view.emit(SelectPrevious),
COPY => self.status_bar.emit(Copy),
CUT => self.status_bar.emit(Cut),
ENTRY_DELETE_NEXT_CHAR => self.status_bar.emit(DeleteNextChar),
ENTRY_DELETE_NEXT_WORD => self.status_bar.emit(DeleteNextWord),
ENTRY_DELETE_PREVIOUS_WORD => self.status_bar.emit(DeletePreviousWord),
ENTRY_END => self.status_bar.emit(End),
ENTRY_NEXT_CHAR => self.status_bar.emit(NextChar),
ENTRY_NEXT_WORD => self.status_bar.emit(NextWord),
ENTRY_PREVIOUS_CHAR => self.status_bar.emit(PreviousChar),
ENTRY_PREVIOUS_WORD => self.status_bar.emit(PreviousWord),
ENTRY_SMART_HOME => self.status_bar.emit(SmartHome),
PASTE => self.status_bar.emit(Paste),
PASTE_SELECTION => self.status_bar.emit(PasteSelection),
_ => unreachable!(),
}
}
fn call_command(&mut self, command: Command<COMM>) {
match command {
App(command) => self.app_command(&command),
Custom(command) => self.model.relm.stream().emit(CustomCommand(command)),
Map { action, keys, mode } => {
let mode_mappings = self.model.mappings.entry(self.model.modes[mode.as_str()].name)
.or_insert_with(HashMap::new);
mode_mappings.insert(keys, action);
},
Set(name, value) => {
match SETT::to_variant(&name, value) {
Ok(setting) => self.set_setting(setting),
Err(error) => {
self.error(Error::Msg("Error setting value".to_string()));
error!("{}", error);
},
}
self.return_to_normal_mode();
},
Unmap { keys, mode } => {
let mode_mappings = self.model.mappings.entry(self.model.modes[mode.as_str()].name)
.or_insert_with(HashMap::new);
mode_mappings.remove(&keys);
},
}
}
pub fn command_activate(&mut self, input: Option<String>) {
let current_mode = self.model.current_mode.get();
let message =
if current_mode == Mode::Input || current_mode == Mode::BlockingInput {
let mut should_reset = false;
if let Some(callback) = self.model.input_callback.take() {
self.model.answer = input.clone();
callback(input, self.model.shortcut_pressed);
should_reset = true;
}
self.model.choices.clear();
if should_reset {
Some(EnterNormalModeAndReset)
}
else {
None
}
}
else {
self.handle_command(input, true, None)
};
if let Some(message) = message {
self.model.relm.stream().emit(message);
}
}
pub fn execute_commands(&mut self, mut parse_result: ParseResult<COMM>, activated: bool) {
for command in parse_result.commands.drain(..) {
self.call_command(command);
}
for error in parse_result.errors.drain(..) {
self.show_parse_error(error);
}
if activated {
self.return_to_normal_mode();
}
}
pub fn handle_command(&mut self, command: Option<String>, activated: bool, prefix: Option<u32>)
-> Option<Msg<COMM, SETT>>
{
if let Some(command) = command {
if self.is_normal_command() || !activated {
let parse_result = self.model.settings_parser.parse_line(&command, prefix);
self.execute_commands(parse_result, activated);
}
else {
return self.handle_special_command(Final, &command);
}
}
None
}
pub fn handle_special_command(&mut self, activation_type: ActivationType, command: &str) -> Option<Msg<COMM, SETT>> {
if let Ok(special_command) = COMM::identifier_to_command(self.model.current_command_mode, command) {
if activation_type == Final {
self.return_to_normal_mode();
}
Some(CustomCommand(special_command))
}
else {
None
}
}
fn show_parse_error(&mut self, error: Error) {
if let Error::Parse(ref parse_error) = error {
let message =
match parse_error.typ {
MissingArgument => "Argument required".to_string(),
NoCommand => return,
Parse => format!("Parse error: unexpected {}, expecting: {}", parse_error.unexpected,
parse_error.expected),
UnknownCommand => format!("Not a command: {}", parse_error.unexpected),
};
self.error(Error::Msg(message));
}
error!("{}", error);
}
}