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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,297 @@ | ||
| use ropey::Rope; | ||
|
|
||
| use zi::{ | ||
| unicode_width::UnicodeWidthStr, AnyCharacter, Bindings, Callback, Canvas, Component, | ||
| ComponentLink, Key, Layout, Rect, ShouldRender, Style, | ||
| }; | ||
|
|
||
| use crate::editor::ContextHandle; | ||
| use zee_edit::{graphemes::RopeGraphemes, movement, Cursor, Direction}; | ||
|
|
||
| #[derive(Clone, PartialEq)] | ||
| pub struct InputProperties { | ||
| pub context: ContextHandle, | ||
| pub style: InputStyle, | ||
| pub content: Rope, | ||
| pub cursor: Cursor, | ||
| pub on_change: Option<Callback<InputChange>>, | ||
| pub focused: bool, | ||
| } | ||
|
|
||
| #[derive(Clone, Debug, PartialEq)] | ||
| pub struct InputStyle { | ||
| pub content: Style, | ||
| pub cursor: Style, | ||
| } | ||
|
|
||
| #[derive(Clone, Debug)] | ||
| pub struct InputChange { | ||
| pub content: Option<Rope>, | ||
| pub cursor: Cursor, | ||
| } | ||
|
|
||
| pub struct Input { | ||
| properties: InputProperties, | ||
| frame: Rect, | ||
| } | ||
|
|
||
| impl Component for Input { | ||
| type Message = Message; | ||
| type Properties = InputProperties; | ||
|
|
||
| fn create(properties: Self::Properties, frame: Rect, _link: ComponentLink<Self>) -> Self { | ||
| Self { properties, frame } | ||
| } | ||
|
|
||
| fn change(&mut self, properties: Self::Properties) -> ShouldRender { | ||
| let should_render = (self.properties != properties).into(); | ||
| self.properties = properties; | ||
| should_render | ||
| } | ||
|
|
||
| fn resize(&mut self, frame: Rect) -> ShouldRender { | ||
| self.frame = frame; | ||
| ShouldRender::Yes | ||
| } | ||
|
|
||
| fn update(&mut self, message: Self::Message) -> ShouldRender { | ||
| let mut cursor = self.properties.cursor.clone(); | ||
| let mut content_change = None; | ||
| let content = &self.properties.content; | ||
| match message { | ||
| // Movement | ||
| Message::Move(direction, count) => { | ||
| movement::move_horizontally(content, &mut cursor, direction, count); | ||
| } | ||
| Message::MoveWord(direction, count) => { | ||
| movement::move_word(content, &mut cursor, direction, count) | ||
| } | ||
| Message::StartOfLine => { | ||
| movement::move_to_start_of_line(content, &mut cursor); | ||
| } | ||
| Message::EndOfLine => { | ||
| movement::move_to_end_of_line(content, &mut cursor); | ||
| } | ||
|
|
||
| // Insertion | ||
| Message::InsertChar { character } => { | ||
| let mut new_content = content.clone(); | ||
| cursor.insert_char(&mut new_content, character); | ||
| movement::move_horizontally(&new_content, &mut cursor, Direction::Forward, 1); | ||
| content_change = Some(new_content); | ||
| } | ||
|
|
||
| // Deletion | ||
| Message::DeleteBackward => { | ||
| let mut new_content = content.clone(); | ||
| cursor.delete_backward(&mut new_content); | ||
| content_change = Some(new_content); | ||
| } | ||
| Message::DeleteForward => { | ||
| let mut new_content = content.clone(); | ||
| cursor.delete_forward(&mut new_content); | ||
| content_change = Some(new_content); | ||
| } | ||
| Message::DeleteLine => { | ||
| let mut new_content = content.clone(); | ||
| cursor.delete_line(&mut new_content); | ||
| content_change = Some(new_content); | ||
| } | ||
|
|
||
| // Selection | ||
| Message::BeginSelection => { | ||
| if cursor.is_selecting() { | ||
| cursor.clear_selection(); | ||
| } else { | ||
| cursor.begin_selection(); | ||
| } | ||
| } | ||
| Message::SelectAll => { | ||
| cursor.select_all(content); | ||
| } | ||
|
|
||
| Message::Yank => { | ||
| let clipboard_str = self.properties.context.clipboard.get_contents().unwrap(); | ||
| if !clipboard_str.is_empty() { | ||
| let mut new_content = content.clone(); | ||
| cursor.insert_chars(&mut new_content, clipboard_str.chars()); | ||
| movement::move_horizontally( | ||
| &new_content, | ||
| &mut cursor, | ||
| Direction::Forward, | ||
| clipboard_str.chars().count(), | ||
| ); | ||
| content_change = Some(new_content); | ||
| } | ||
| } | ||
| Message::CopySelection => { | ||
| let selection = cursor.selection(); | ||
| self.properties | ||
| .context | ||
| .clipboard | ||
| .set_contents(content.slice(selection.start..selection.end).into()) | ||
| .unwrap(); | ||
| cursor.clear_selection(); | ||
| } | ||
| Message::CutSelection => { | ||
| let mut new_content = content.clone(); | ||
| let operation = cursor.delete_selection(&mut new_content); | ||
| self.properties | ||
| .context | ||
| .clipboard | ||
| .set_contents(operation.deleted.into()) | ||
| .unwrap(); | ||
| content_change = Some(new_content); | ||
| } | ||
| } | ||
|
|
||
| if let Some(on_change) = self.properties.on_change.as_ref() { | ||
| on_change.emit(InputChange { | ||
| cursor, | ||
| content: content_change, | ||
| }); | ||
| } | ||
|
|
||
| ShouldRender::Yes | ||
| } | ||
|
|
||
| fn view(&self) -> Layout { | ||
| let Self { | ||
| properties: | ||
| InputProperties { | ||
| ref content, | ||
| ref cursor, | ||
| ref style, | ||
| .. | ||
| }, | ||
| .. | ||
| } = *self; | ||
|
|
||
| let mut canvas = Canvas::new(self.frame.size); | ||
| canvas.clear(style.content); | ||
|
|
||
| let mut char_offset = 0; | ||
| let mut visual_offset = 0; | ||
| for grapheme in RopeGraphemes::new(&content.slice(..)) { | ||
| let len_chars = grapheme.len_chars(); | ||
| // TODO: don't unwrap (need to be able to create a smallstring from a rope slice) | ||
| let grapheme = grapheme.as_str().unwrap(); | ||
| let grapheme_width = UnicodeWidthStr::width(grapheme); | ||
|
|
||
| canvas.draw_str( | ||
| visual_offset, | ||
| 0, | ||
| if cursor.selection().contains(&char_offset) { | ||
| style.cursor | ||
| } else { | ||
| style.content | ||
| }, | ||
| if grapheme_width > 0 { grapheme } else { " " }, | ||
| ); | ||
| visual_offset += grapheme_width; | ||
| char_offset += len_chars; | ||
| } | ||
|
|
||
| if cursor.range().start == char_offset { | ||
| canvas.draw_str(visual_offset, 0, style.cursor, " "); | ||
| } | ||
|
|
||
| canvas.into() | ||
| } | ||
|
|
||
| fn bindings(&self, bindings: &mut Bindings<Self>) { | ||
| use Key::*; | ||
|
|
||
| bindings.set_focus(self.properties.focused); | ||
| if !bindings.is_empty() { | ||
| return; | ||
| } | ||
|
|
||
| // Movement | ||
| bindings | ||
| .command("move-backward", || Message::Move(Direction::Backward, 1)) | ||
| .with([Ctrl('b')]) | ||
| .with([Left]); | ||
| bindings | ||
| .command("move-forward", || Message::Move(Direction::Forward, 1)) | ||
| .with([Ctrl('f')]) | ||
| .with([Right]); | ||
| bindings | ||
| .command("move-backward-word", || { | ||
| Message::MoveWord(Direction::Backward, 1) | ||
| }) | ||
| .with([Alt('b')]); | ||
| bindings | ||
| .command("move-forward-word", || { | ||
| Message::MoveWord(Direction::Forward, 1) | ||
| }) | ||
| .with([Alt('f')]); | ||
| bindings | ||
| .command("start-of-line", || Message::StartOfLine) | ||
| .with([Ctrl('a')]) | ||
| .with([Home]); | ||
| bindings | ||
| .command("end-of-line", || Message::EndOfLine) | ||
| .with([Ctrl('e')]) | ||
| .with([End]); | ||
|
|
||
| // Selection | ||
| // | ||
| // Begin selection | ||
| bindings | ||
| .command("begin-selection", || Message::BeginSelection) | ||
| .with([Null]) | ||
| .with([Ctrl(' ')]); | ||
|
|
||
| // Select all | ||
| bindings.add("select-all", [Ctrl('x'), Char('h')], || Message::SelectAll); | ||
| // Copy selection to clipboard | ||
| bindings.add("copy-selection", [Alt('w')], || Message::CopySelection); | ||
| // Cut selection to clipboard | ||
| bindings.add("cut-selection", [Ctrl('w')], || Message::CutSelection); | ||
| // Paste from clipboard | ||
| bindings.add("paste-clipboard", [Ctrl('y')], || Message::Yank); | ||
|
|
||
| // Editing | ||
| bindings | ||
| .command("delete-forward", || Message::DeleteForward) | ||
| .with([Ctrl('d')]) | ||
| .with([Delete]); | ||
| bindings.add("delete-backward", [Backspace], || Message::DeleteBackward); | ||
| bindings.add("delete-line", [Ctrl('k')], || Message::DeleteLine); | ||
|
|
||
| bindings.add( | ||
| "insert-character", | ||
| AnyCharacter, | ||
| |keys: &[Key]| match keys { | ||
| &[Char(character)] | ||
| if character != '\n' && character != '\r' && character != '\t' => | ||
| { | ||
| Some(Message::InsertChar { character }) | ||
| } | ||
| _ => None, | ||
| }, | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| #[derive(Clone, Debug, PartialEq, Eq)] | ||
| pub enum Message { | ||
| // Movement | ||
| Move(Direction, usize), | ||
| MoveWord(Direction, usize), | ||
| StartOfLine, | ||
| EndOfLine, | ||
|
|
||
| // Editing | ||
| BeginSelection, | ||
| SelectAll, | ||
| Yank, | ||
| CopySelection, | ||
| CutSelection, | ||
|
|
||
| DeleteForward, | ||
| DeleteBackward, | ||
| DeleteLine, | ||
| InsertChar { character: char }, | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,6 @@ | ||
| pub mod buffer; | ||
| pub mod edit_tree_viewer; | ||
| pub mod input; | ||
| pub mod prompt; | ||
| pub mod splash; | ||
| pub mod theme; |
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