feat: implement triple-click + drag by-line selection

1 files changed, 24 insertions, 13 deletions

diff --git a/src/text/rich.rs b/src/text/rich.rs
index ae8bbab..93cefa2 100644
--- a/src/text/rich.rs
+++ b/src/text/rich.rs
@@ -16,7 +16,7 @@ use crate::core::{
     Rectangle, Shell, Size, Vector, Widget,
 };
 use crate::selection::{Selection, SelectionEnd};
-use crate::text::{Catalog, Style, StyleFn};
+use crate::text::{Catalog, Dragging, Style, StyleFn};
 
 /// A bunch of [`Rich`] text.
 pub struct Rich<
@@ -184,7 +184,7 @@ struct State<Link> {
     paragraph: Paragraph,
     is_hovered: bool,
     selection: Selection,
-    is_dragging: bool,
+    dragging: Option<Dragging>,
     last_click: Option<mouse::Click>,
     keyboard_modifiers: keyboard::Modifiers,
 }
@@ -239,7 +239,7 @@ where
             paragraph: Paragraph::default(),
             is_hovered: false,
             selection: Selection::default(),
-            is_dragging: false,
+            dragging: None,
             last_click: None,
             keyboard_modifiers: keyboard::Modifiers::default(),
         })
@@ -475,7 +475,7 @@ where
 
         if viewport.intersection(&bounds).is_none()
             && state.selection == Selection::default()
-            && !state.is_dragging
+            && state.dragging.is_none()
         {
             return;
         }
@@ -524,10 +524,10 @@ where
 
                             if state.keyboard_modifiers.shift() {
                                 state.selection.change_selection(new_end);
-                                state.is_dragging = true;
+                                state.dragging = Some(Dragging::Grapheme);
                             } else if state.span_pressed.is_none() {
                                 state.selection.select_range(new_end, new_end);
-                                state.is_dragging = true;
+                                state.dragging = Some(Dragging::Grapheme);
                             }
                         }
                         mouse::click::Kind::Double => {
@@ -536,11 +536,11 @@ where
                                 index,
                                 &state.paragraph,
                             );
-                            state.is_dragging = false;
+                            state.dragging = None;
                         }
                         mouse::click::Kind::Triple => {
                             state.selection.select_line(line, &state.paragraph);
-                            state.is_dragging = false;
+                            state.dragging = Some(Dragging::Line);
                         }
                     }
                 } else {
@@ -550,7 +550,7 @@ where
             Event::Mouse(mouse::Event::ButtonReleased(mouse::Button::Left))
             | Event::Touch(touch::Event::FingerLifted { .. })
             | Event::Touch(touch::Event::FingerLost { .. }) => {
-                state.is_dragging = false;
+                state.dragging = None;
                 if !matches!(
                     event,
                     Event::Touch(touch::Event::FingerLost { .. })
@@ -578,15 +578,26 @@ where
             Event::Mouse(mouse::Event::CursorMoved { .. })
             | Event::Touch(touch::Event::FingerMoved { .. }) => {
                 if let Some(position) = click_position
-                    && state.is_dragging
+                    && let Some(dragging) = state.dragging
                 {
                     let (line, index) = state
                         .grapheme_line_and_index(position)
                         .unwrap_or((0, 0));
 
-                    let new_end = SelectionEnd { line, index };
+                    match dragging {
+                        Dragging::Grapheme => {
+                            let new_end = SelectionEnd { line, index };
 
-                    state.selection.change_selection(new_end);
+                            state.selection.change_selection(new_end);
+                        }
+                        Dragging::Word => {}
+                        Dragging::Line => {
+                            state.selection.change_selection_by_line(
+                                line,
+                                &state.paragraph,
+                            );
+                        }
+                    };
                 }
             }
             Event::Keyboard(keyboard::Event::KeyPressed { key, .. }) => {
@@ -695,7 +706,7 @@ where
                         shell.capture_event();
                     }
                     keyboard::Key::Named(key::Named::Escape) => {
-                        state.is_dragging = false;
+                        state.dragging = None;
                         state.selection = Selection::default();
 
                         state.keyboard_modifiers =