539 lines
17 KiB
Rust
539 lines
17 KiB
Rust
use crate::Renderer;
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use crate::widget::menu::MenuBarState;
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use iced::window;
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use iced_core::event::Event;
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use iced_core::text::LineHeight;
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use iced_core::widget::Widget;
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use iced_core::widget::text::{Alignment, Catalog, Ellipsize, Shaping, Style, Wrapping};
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use iced_core::widget::tree::{self, Tree};
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use iced_core::{
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Clipboard, Color, Layout, Length, Pixels, Rectangle, Shell, Size, Vector, alignment, mouse,
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overlay, renderer,
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};
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use std::borrow::Cow;
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type InnerText<'a> = iced_core::widget::text::Text<'a, crate::Theme, Renderer>;
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/// A selectable text widget with right-click context menu support.
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///
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/// Wraps the plain [`Text`](crate::widget::Text) widget to add text selection
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/// and a context menu (Copy / Select All), both **on by default**. Created
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/// with [`selectable_text`]; the plain [`text`](crate::widget::text)
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/// constructor and the typography presets return the unwrapped
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/// [`Text`](crate::widget::Text), so non-selectable text keeps iced's looser
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/// trait bounds.
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///
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/// Use [`.selectable(false)`](Self::selectable) for plain, non-interactive
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/// text, or [`.context_menu(false)`](Self::context_menu) to keep selection
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/// without the menu.
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pub struct SelectableText<'a> {
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inner: InnerText<'a>,
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selectable: bool,
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context_menu: bool,
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window_id: window::Id,
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}
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impl<'a> SelectableText<'a> {
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/// Creates a new [`SelectableText`] widget with the given content.
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///
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/// Selection and the context menu are enabled by default.
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pub fn new(content: impl iced_core::text::IntoFragment<'a>) -> Self {
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Self {
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inner: InnerText::new(content),
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selectable: true,
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context_menu: true,
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window_id: crate::widget::text_context_menu::current_window_id(),
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}
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}
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/// Controls whether the text is selectable. On by default.
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///
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/// Pass `false` to render plain, non-interactive text (this also
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/// suppresses the context menu, which has nothing to act on).
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pub fn selectable(mut self, enabled: bool) -> Self {
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self.selectable = enabled;
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self
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}
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/// Controls whether the right-click context menu is shown. On by default.
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///
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/// Pass `false` to keep text selection but disable the context menu.
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pub fn context_menu(mut self, enabled: bool) -> Self {
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self.context_menu = enabled;
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self
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}
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/// Whether the wrapper should install its context-menu machinery: only
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/// when the menu is enabled *and* the text is selectable (a menu over
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/// non-selectable text would have nothing to act on).
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fn shows_context_menu(&self) -> bool {
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self.selectable && self.context_menu
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}
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fn uses_popup_context_menu(&self) -> bool {
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#[cfg(all(wayland_platform, feature = "winit"))]
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if matches!(
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crate::app::cosmic::WINDOWING_SYSTEM.get(),
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Some(crate::app::cosmic::WindowingSystem::Wayland)
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) {
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return true;
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}
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false
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}
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pub fn size(mut self, size: impl Into<Pixels>) -> Self {
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self.inner = self.inner.size(size);
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self
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}
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pub fn line_height(mut self, line_height: impl Into<LineHeight>) -> Self {
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self.inner = self.inner.line_height(line_height);
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self
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}
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pub fn font(mut self, font: impl Into<<Renderer as iced_core::text::Renderer>::Font>) -> Self {
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self.inner = self.inner.font(font);
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self
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}
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pub fn font_maybe(
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mut self,
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font: Option<impl Into<<Renderer as iced_core::text::Renderer>::Font>>,
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) -> Self {
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self.inner = self.inner.font_maybe(font);
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self
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}
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pub fn width(mut self, width: impl Into<Length>) -> Self {
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self.inner = self.inner.width(width);
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self
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}
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pub fn height(mut self, height: impl Into<Length>) -> Self {
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self.inner = self.inner.height(height);
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self
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}
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pub fn center(mut self) -> Self {
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self.inner = self.inner.center();
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self
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}
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pub fn align_x(mut self, alignment: impl Into<Alignment>) -> Self {
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self.inner = self.inner.align_x(alignment);
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self
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}
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pub fn align_y(mut self, alignment: impl Into<alignment::Vertical>) -> Self {
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self.inner = self.inner.align_y(alignment);
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self
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}
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pub fn shaping(mut self, shaping: Shaping) -> Self {
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self.inner = self.inner.shaping(shaping);
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self
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}
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pub fn wrapping(mut self, wrapping: Wrapping) -> Self {
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self.inner = self.inner.wrapping(wrapping);
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self
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}
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pub fn ellipsize(mut self, ellipsize: Ellipsize) -> Self {
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self.inner = self.inner.ellipsize(ellipsize);
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self
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}
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#[must_use]
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pub fn style(mut self, style: impl Fn(&crate::Theme) -> Style + 'a) -> Self
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where
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<crate::Theme as Catalog>::Class<'a>:
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From<iced_core::widget::text::StyleFn<'a, crate::Theme>>,
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{
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self.inner = self.inner.style(style);
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self
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}
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pub fn color(mut self, color: impl Into<Color>) -> Self
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where
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<crate::Theme as Catalog>::Class<'a>:
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From<iced_core::widget::text::StyleFn<'a, crate::Theme>>,
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{
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self.inner = self.inner.color(color);
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self
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}
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pub fn color_maybe(mut self, color: Option<impl Into<Color>>) -> Self
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where
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<crate::Theme as Catalog>::Class<'a>:
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From<iced_core::widget::text::StyleFn<'a, crate::Theme>>,
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{
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self.inner = self.inner.color_maybe(color);
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self
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}
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#[must_use]
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pub fn class(mut self, class: impl Into<<crate::Theme as Catalog>::Class<'a>>) -> Self {
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self.inner = self.inner.class(class);
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self
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}
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}
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impl<'a> From<InnerText<'a>> for SelectableText<'a> {
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fn from(inner: InnerText<'a>) -> Self {
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Self {
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inner,
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selectable: true,
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context_menu: true,
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window_id: crate::widget::text_context_menu::current_window_id(),
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}
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}
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}
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impl<'a> From<&'a str> for SelectableText<'a> {
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fn from(content: &'a str) -> Self {
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Self::new(content)
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}
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}
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struct TextWrapperState {
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menu_bar_state: MenuBarState,
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pending_action: crate::widget::text_context_menu::PendingAction,
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}
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fn w<'x, Message>(inner: &'x InnerText<'_>) -> &'x dyn Widget<Message, crate::Theme, Renderer> {
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inner
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}
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fn w_mut<'x, Message>(
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inner: &'x mut InnerText<'_>,
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) -> &'x mut dyn Widget<Message, crate::Theme, Renderer> {
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inner
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}
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impl<'a, Message: Clone + 'static> Widget<Message, crate::Theme, Renderer> for SelectableText<'a> {
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fn tag(&self) -> tree::Tag {
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if self.shows_context_menu() {
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tree::Tag::of::<TextWrapperState>()
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} else {
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w::<Message>(&self.inner).tag()
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}
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}
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fn state(&self) -> tree::State {
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if self.shows_context_menu() {
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tree::State::new(TextWrapperState {
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menu_bar_state: MenuBarState::default(),
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pending_action: crate::widget::text_context_menu::pending_action(),
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})
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} else {
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w::<Message>(&self.inner).state()
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}
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}
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fn children(&self) -> Vec<Tree> {
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if self.shows_context_menu() {
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vec![Tree::new(w::<Message>(&self.inner))]
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} else {
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Vec::new()
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}
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}
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fn diff(&mut self, tree: &mut Tree) {
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if self.shows_context_menu() {
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if let Some(child) = tree.children.first_mut() {
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child.diff(&mut self.inner as &mut dyn Widget<Message, crate::Theme, Renderer>);
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}
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}
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}
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fn size(&self) -> Size<Length> {
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w::<Message>(&self.inner).size()
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}
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fn layout(
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&mut self,
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tree: &mut Tree,
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renderer: &Renderer,
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limits: &iced_core::layout::Limits,
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) -> iced_core::layout::Node {
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let inner_tree = if self.shows_context_menu() {
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&mut tree.children[0]
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} else {
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tree
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};
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w_mut::<Message>(&mut self.inner).layout(inner_tree, renderer, limits)
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}
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fn draw(
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&self,
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tree: &Tree,
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renderer: &mut Renderer,
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theme: &crate::Theme,
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defaults: &renderer::Style,
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layout: Layout<'_>,
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cursor: mouse::Cursor,
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viewport: &Rectangle,
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) {
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let inner_tree = if self.shows_context_menu() {
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&tree.children[0]
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} else {
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tree
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};
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w::<Message>(&self.inner).draw(
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inner_tree, renderer, theme, defaults, layout, cursor, viewport,
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);
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// draw a border when the text is focused
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use iced_core::renderer::Renderer as RendererExt;
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use iced_core::widget::text::State as TextState;
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let state = inner_tree
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.state
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.downcast_ref::<TextState<<Renderer as iced_core::text::Renderer>::Paragraph>>();
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if state.is_keyboard_focused() {
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let cosmic = theme.cosmic();
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let accent: Color = cosmic.accent.base.into();
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renderer.fill_quad(
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renderer::Quad {
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bounds: layout.bounds(),
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border: iced_core::Border {
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color: accent,
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width: 1.0,
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radius: cosmic.corner_radii.radius_s.into(),
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},
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..renderer::Quad::default()
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},
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Color::TRANSPARENT,
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);
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}
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}
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fn update(
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&mut self,
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tree: &mut Tree,
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event: &Event,
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layout: Layout<'_>,
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cursor: mouse::Cursor,
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renderer: &Renderer,
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clipboard: &mut dyn Clipboard,
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shell: &mut Shell<'_, Message>,
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viewport: &Rectangle,
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) {
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if self.shows_context_menu() {
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w_mut::<Message>(&mut self.inner).update(
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&mut tree.children[0],
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event,
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layout,
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cursor,
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renderer,
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clipboard,
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shell,
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viewport,
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);
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#[cfg(wayland_platform)]
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if self.uses_popup_context_menu() {
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use iced_core::widget::text::HasSelectableText;
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if self
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.inner
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.context_menu_position(&tree.children[0])
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.is_some()
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{
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let selected_text = self.inner.selected_text(&tree.children[0]);
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let has_selection = selected_text.is_some();
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let click_position =
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self.inner.context_menu_position(&tree.children[0]).unwrap();
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let wrapper_state = tree.state.downcast_ref::<TextWrapperState>();
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let menu_bar_state = wrapper_state.menu_bar_state.clone();
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let pending_action = wrapper_state.pending_action.clone();
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crate::widget::text_context_menu::create_text_context_popup(
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click_position,
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selected_text,
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false,
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has_selection,
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self.inner.has_text(&tree.children[0]),
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self.inner.clipboard_has_text(&tree.children[0]),
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&menu_bar_state,
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&pending_action,
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renderer,
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viewport,
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cursor,
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self.window_id,
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);
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self.inner
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.set_context_menu_position(&mut tree.children[0], None);
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}
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{
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let wrapper_state = tree.state.downcast_ref::<TextWrapperState>();
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let pending_action = wrapper_state.pending_action.clone();
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if let Some(action) =
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crate::widget::text_context_menu::take_pending_action(&pending_action)
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{
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match action {
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crate::widget::text_context_menu::TextCtxAction::Copy => {}
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crate::widget::text_context_menu::TextCtxAction::SelectAll => {
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self.inner.select_all(&mut tree.children[0]);
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shell.request_redraw();
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}
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_ => {}
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}
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}
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}
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let wrapper_state = tree.state.downcast_ref::<TextWrapperState>();
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let menu_bar_state = wrapper_state.menu_bar_state.clone();
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crate::widget::text_context_menu::dismiss_popup_on_event(
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&menu_bar_state,
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event,
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self.window_id,
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);
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}
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} else {
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w_mut::<Message>(&mut self.inner).update(
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tree, event, layout, cursor, renderer, clipboard, shell, viewport,
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);
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}
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}
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fn mouse_interaction(
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&self,
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tree: &Tree,
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layout: Layout<'_>,
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cursor: mouse::Cursor,
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viewport: &Rectangle,
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renderer: &Renderer,
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) -> mouse::Interaction {
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let inner_tree = if self.shows_context_menu() {
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&tree.children[0]
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} else {
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tree
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};
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w::<Message>(&self.inner).mouse_interaction(inner_tree, layout, cursor, viewport, renderer)
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}
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fn overlay<'b>(
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&'b mut self,
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tree: &'b mut Tree,
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_layout: Layout<'b>,
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_renderer: &Renderer,
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_viewport: &Rectangle,
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translation: Vector,
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) -> Option<overlay::Element<'b, Message, crate::Theme, Renderer>> {
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if self.shows_context_menu() && !self.uses_popup_context_menu() {
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let menu_bar_state = tree
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.state
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.downcast_ref::<TextWrapperState>()
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.menu_bar_state
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.clone();
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let inner_tree = &mut tree.children[0];
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crate::widget::text_context_menu::context_menu_overlay(
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&self.inner,
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inner_tree,
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None,
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translation,
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menu_bar_state,
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)
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} else {
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None
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}
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}
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fn operate(
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&mut self,
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tree: &mut Tree,
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layout: Layout<'_>,
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renderer: &Renderer,
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operation: &mut dyn iced_core::widget::Operation,
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) {
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let inner_tree = if self.shows_context_menu() {
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&mut tree.children[0]
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} else {
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tree
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};
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w_mut::<Message>(&mut self.inner).operate(inner_tree, layout, renderer, operation);
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}
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#[cfg(feature = "a11y")]
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fn a11y_nodes(
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&self,
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layout: Layout<'_>,
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state: &Tree,
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cursor: mouse::Cursor,
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) -> iced_accessibility::A11yTree {
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let inner_state = if self.shows_context_menu() {
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&state.children[0]
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} else {
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state
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};
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w::<Message>(&self.inner).a11y_nodes(layout, inner_state, cursor)
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}
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fn id(&self) -> Option<iced_core::widget::Id> {
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w::<Message>(&self.inner).id()
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}
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fn set_id(&mut self, id: iced_core::widget::Id) {
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w_mut::<Message>(&mut self.inner).set_id(id);
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}
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}
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impl<'a, Message: Clone + 'static> From<SelectableText<'a>> for crate::Element<'a, Message> {
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fn from(text: SelectableText<'a>) -> Self {
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let SelectableText {
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inner,
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selectable,
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context_menu,
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window_id,
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} = text;
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// Apply selection to the inner widget here, at the last moment before
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// it becomes part of the tree. iced's `Text::selectable()` is one-way
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// (it can only set the flag), so deferring until conversion lets
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// `selectable(false)` work without ever having set it.
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let inner = if selectable {
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inner.selectable()
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} else {
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inner
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};
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Self::new(SelectableText {
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inner,
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selectable,
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context_menu,
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window_id,
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})
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}
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}
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|
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/// Creates a [`SelectableText`] widget: text the user can select, with a
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/// right-click context menu (Copy / Select All).
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///
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/// Use [`.context_menu(false)`](SelectableText::context_menu) to keep
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/// selection but suppress the menu.
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pub fn selectable_text<'a>(content: impl Into<Cow<'a, str>> + 'a) -> SelectableText<'a> {
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SelectableText::new(content.into()).font(crate::font::default())
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}
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// Typography presets, mirroring [`crate::widget::text`]
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macro_rules! selectable_preset {
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($(#[$meta:meta])* $name:ident) => {
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$(#[$meta])*
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pub fn $name<'a>(content: impl Into<Cow<'a, str>> + 'a) -> SelectableText<'a> {
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SelectableText::from(crate::widget::text::$name(content))
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}
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};
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}
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selectable_preset!(title1);
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selectable_preset!(title2);
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selectable_preset!(title3);
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|
selectable_preset!(title4);
|
|
selectable_preset!(heading);
|
|
selectable_preset!(caption_heading);
|
|
selectable_preset!(body);
|
|
selectable_preset!(caption);
|
|
selectable_preset!(monotext);
|