1use crate::markdown_elements::{
2 HeadingLevel, Image, Link, MarkdownParagraph, MarkdownParagraphChunk, ParsedMarkdown,
3 ParsedMarkdownBlockQuote, ParsedMarkdownCodeBlock, ParsedMarkdownElement,
4 ParsedMarkdownHeading, ParsedMarkdownListItem, ParsedMarkdownListItemType, ParsedMarkdownTable,
5 ParsedMarkdownTableAlignment, ParsedMarkdownTableRow,
6};
7use fs::normalize_path;
8use gpui::{
9 AbsoluteLength, AnyElement, App, AppContext as _, ClipboardItem, Context, DefiniteLength, Div,
10 Element, ElementId, Entity, HighlightStyle, Hsla, ImageSource, InteractiveText, IntoElement,
11 Keystroke, Modifiers, ParentElement, Render, Resource, SharedString, Styled, StyledText,
12 TextStyle, WeakEntity, Window, div, img, rems,
13};
14use settings::Settings;
15use std::{
16 ops::{Mul, Range},
17 sync::Arc,
18 vec,
19};
20use theme::{ActiveTheme, SyntaxTheme, ThemeSettings};
21use ui::{
22 ButtonCommon, Clickable, Color, FluentBuilder, IconButton, IconName, IconSize,
23 InteractiveElement, Label, LabelCommon, LabelSize, LinkPreview, Pixels, Rems,
24 StatefulInteractiveElement, StyledExt, StyledImage, ToggleState, Tooltip, VisibleOnHover,
25 h_flex, tooltip_container, v_flex,
26};
27use workspace::{OpenOptions, OpenVisible, Workspace};
28
29pub struct CheckboxClickedEvent {
30 pub checked: bool,
31 pub source_range: Range<usize>,
32}
33
34impl CheckboxClickedEvent {
35 pub fn source_range(&self) -> Range<usize> {
36 self.source_range.clone()
37 }
38
39 pub fn checked(&self) -> bool {
40 self.checked
41 }
42}
43
44type CheckboxClickedCallback = Arc<Box<dyn Fn(&CheckboxClickedEvent, &mut Window, &mut App)>>;
45
46#[derive(Clone)]
47pub struct RenderContext {
48 workspace: Option<WeakEntity<Workspace>>,
49 next_id: usize,
50 buffer_font_family: SharedString,
51 buffer_text_style: TextStyle,
52 text_style: TextStyle,
53 border_color: Hsla,
54 title_bar_background_color: Hsla,
55 panel_background_color: Hsla,
56 text_color: Hsla,
57 link_color: Hsla,
58 window_rem_size: Pixels,
59 text_muted_color: Hsla,
60 code_block_background_color: Hsla,
61 code_span_background_color: Hsla,
62 syntax_theme: Arc<SyntaxTheme>,
63 indent: usize,
64 checkbox_clicked_callback: Option<CheckboxClickedCallback>,
65 is_last_child: bool,
66}
67
68impl RenderContext {
69 pub fn new(
70 workspace: Option<WeakEntity<Workspace>>,
71 window: &mut Window,
72 cx: &mut App,
73 ) -> RenderContext {
74 let theme = cx.theme().clone();
75
76 let settings = ThemeSettings::get_global(cx);
77 let buffer_font_family = settings.buffer_font.family.clone();
78 let mut buffer_text_style = window.text_style();
79 buffer_text_style.font_family = buffer_font_family.clone();
80 buffer_text_style.font_size = AbsoluteLength::from(settings.buffer_font_size(cx));
81
82 RenderContext {
83 workspace,
84 next_id: 0,
85 indent: 0,
86 buffer_font_family,
87 buffer_text_style,
88 text_style: window.text_style(),
89 syntax_theme: theme.syntax().clone(),
90 border_color: theme.colors().border,
91 title_bar_background_color: theme.colors().title_bar_background,
92 panel_background_color: theme.colors().panel_background,
93 text_color: theme.colors().text,
94 link_color: theme.colors().text_accent,
95 window_rem_size: window.rem_size(),
96 text_muted_color: theme.colors().text_muted,
97 code_block_background_color: theme.colors().surface_background,
98 code_span_background_color: theme.colors().editor_document_highlight_read_background,
99 checkbox_clicked_callback: None,
100 is_last_child: false,
101 }
102 }
103
104 pub fn with_checkbox_clicked_callback(
105 mut self,
106 callback: impl Fn(&CheckboxClickedEvent, &mut Window, &mut App) + 'static,
107 ) -> Self {
108 self.checkbox_clicked_callback = Some(Arc::new(Box::new(callback)));
109 self
110 }
111
112 fn next_id(&mut self, span: &Range<usize>) -> ElementId {
113 let id = format!("markdown-{}-{}-{}", self.next_id, span.start, span.end);
114 self.next_id += 1;
115 ElementId::from(SharedString::from(id))
116 }
117
118 /// HACK: used to have rems relative to buffer font size, so that things scale appropriately as
119 /// buffer font size changes. The callees of this function should be reimplemented to use real
120 /// relative sizing once that is implemented in GPUI
121 pub fn scaled_rems(&self, rems: f32) -> Rems {
122 self.buffer_text_style
123 .font_size
124 .to_rems(self.window_rem_size)
125 .mul(rems)
126 }
127
128 /// This ensures that children inside of block quotes
129 /// have padding between them.
130 ///
131 /// For example, for this markdown:
132 ///
133 /// ```markdown
134 /// > This is a block quote.
135 /// >
136 /// > And this is the next paragraph.
137 /// ```
138 ///
139 /// We give padding between "This is a block quote."
140 /// and "And this is the next paragraph."
141 fn with_common_p(&self, element: Div) -> Div {
142 if self.indent > 0 && !self.is_last_child {
143 element.pb(self.scaled_rems(0.75))
144 } else {
145 element
146 }
147 }
148
149 /// The is used to indicate that the current element is the last child or not of its parent.
150 ///
151 /// Then we can avoid adding padding to the bottom of the last child.
152 fn with_last_child<R>(&mut self, is_last: bool, render: R) -> AnyElement
153 where
154 R: FnOnce(&mut Self) -> AnyElement,
155 {
156 self.is_last_child = is_last;
157 let element = render(self);
158 self.is_last_child = false;
159 element
160 }
161}
162
163pub fn render_parsed_markdown(
164 parsed: &ParsedMarkdown,
165 workspace: Option<WeakEntity<Workspace>>,
166 window: &mut Window,
167 cx: &mut App,
168) -> Div {
169 let mut cx = RenderContext::new(workspace, window, cx);
170
171 v_flex().gap_3().children(
172 parsed
173 .children
174 .iter()
175 .map(|block| render_markdown_block(block, &mut cx)),
176 )
177}
178pub fn render_markdown_block(block: &ParsedMarkdownElement, cx: &mut RenderContext) -> AnyElement {
179 use ParsedMarkdownElement::*;
180 match block {
181 Paragraph(text) => render_markdown_paragraph(text, cx),
182 Heading(heading) => render_markdown_heading(heading, cx),
183 ListItem(list_item) => render_markdown_list_item(list_item, cx),
184 Table(table) => render_markdown_table(table, cx),
185 BlockQuote(block_quote) => render_markdown_block_quote(block_quote, cx),
186 CodeBlock(code_block) => render_markdown_code_block(code_block, cx),
187 HorizontalRule(_) => render_markdown_rule(cx),
188 Image(image) => render_markdown_image(image, cx),
189 }
190}
191
192fn render_markdown_heading(parsed: &ParsedMarkdownHeading, cx: &mut RenderContext) -> AnyElement {
193 let size = match parsed.level {
194 HeadingLevel::H1 => 2.,
195 HeadingLevel::H2 => 1.5,
196 HeadingLevel::H3 => 1.25,
197 HeadingLevel::H4 => 1.,
198 HeadingLevel::H5 => 0.875,
199 HeadingLevel::H6 => 0.85,
200 };
201
202 let text_size = cx.scaled_rems(size);
203
204 // was `DefiniteLength::from(text_size.mul(1.25))`
205 // let line_height = DefiniteLength::from(text_size.mul(1.25));
206 let line_height = text_size * 1.25;
207
208 // was `rems(0.15)`
209 // let padding_top = cx.scaled_rems(0.15);
210 let padding_top = rems(0.15);
211
212 // was `.pb_1()` = `rems(0.25)`
213 // let padding_bottom = cx.scaled_rems(0.25);
214 let padding_bottom = rems(0.25);
215
216 let color = match parsed.level {
217 HeadingLevel::H6 => cx.text_muted_color,
218 _ => cx.text_color,
219 };
220 div()
221 .line_height(line_height)
222 .text_size(text_size)
223 .text_color(color)
224 .pt(padding_top)
225 .pb(padding_bottom)
226 .children(render_markdown_text(&parsed.contents, cx))
227 .whitespace_normal()
228 .into_any()
229}
230
231fn render_markdown_list_item(
232 parsed: &ParsedMarkdownListItem,
233 cx: &mut RenderContext,
234) -> AnyElement {
235 use ParsedMarkdownListItemType::*;
236
237 let padding = cx.scaled_rems((parsed.depth - 1) as f32);
238
239 let bullet = match &parsed.item_type {
240 Ordered(order) => format!("{}.", order).into_any_element(),
241 Unordered => "•".into_any_element(),
242 Task(checked, range) => div()
243 .id(cx.next_id(range))
244 .mt(cx.scaled_rems(3.0 / 16.0))
245 .child(
246 MarkdownCheckbox::new(
247 "checkbox",
248 if *checked {
249 ToggleState::Selected
250 } else {
251 ToggleState::Unselected
252 },
253 cx.clone(),
254 )
255 .when_some(
256 cx.checkbox_clicked_callback.clone(),
257 |this, callback| {
258 this.on_click({
259 let range = range.clone();
260 move |selection, window, cx| {
261 let checked = match selection {
262 ToggleState::Selected => true,
263 ToggleState::Unselected => false,
264 _ => return,
265 };
266
267 if window.modifiers().secondary() {
268 callback(
269 &CheckboxClickedEvent {
270 checked,
271 source_range: range.clone(),
272 },
273 window,
274 cx,
275 );
276 }
277 }
278 })
279 },
280 ),
281 )
282 .hover(|s| s.cursor_pointer())
283 .tooltip(|_, cx| {
284 InteractiveMarkdownElementTooltip::new(None, "toggle checkbox", cx).into()
285 })
286 .into_any_element(),
287 };
288 let bullet = div().mr(cx.scaled_rems(0.5)).child(bullet);
289
290 let contents: Vec<AnyElement> = parsed
291 .content
292 .iter()
293 .map(|c| render_markdown_block(c, cx))
294 .collect();
295
296 let item = h_flex()
297 .pl(DefiniteLength::Absolute(AbsoluteLength::Rems(padding)))
298 .items_start()
299 .children(vec![
300 bullet,
301 v_flex()
302 .children(contents)
303 .gap(cx.scaled_rems(1.0))
304 .pr(cx.scaled_rems(1.0))
305 .w_full(),
306 ]);
307
308 cx.with_common_p(item).into_any()
309}
310
311/// # MarkdownCheckbox ///
312/// HACK: Copied from `ui/src/components/toggle.rs` to deal with scaling issues in markdown preview
313/// changes should be integrated into `Checkbox` in `toggle.rs` while making sure checkboxes elsewhere in the
314/// app are not visually affected
315#[derive(gpui::IntoElement)]
316struct MarkdownCheckbox {
317 id: ElementId,
318 toggle_state: ToggleState,
319 disabled: bool,
320 placeholder: bool,
321 on_click: Option<Box<dyn Fn(&ToggleState, &mut Window, &mut App) + 'static>>,
322 filled: bool,
323 style: ui::ToggleStyle,
324 tooltip: Option<Box<dyn Fn(&mut Window, &mut App) -> gpui::AnyView>>,
325 label: Option<SharedString>,
326 render_cx: RenderContext,
327}
328
329impl MarkdownCheckbox {
330 /// Creates a new [`Checkbox`].
331 fn new(id: impl Into<ElementId>, checked: ToggleState, render_cx: RenderContext) -> Self {
332 Self {
333 id: id.into(),
334 toggle_state: checked,
335 disabled: false,
336 on_click: None,
337 filled: false,
338 style: ui::ToggleStyle::default(),
339 tooltip: None,
340 label: None,
341 placeholder: false,
342 render_cx,
343 }
344 }
345
346 /// Binds a handler to the [`Checkbox`] that will be called when clicked.
347 fn on_click(mut self, handler: impl Fn(&ToggleState, &mut Window, &mut App) + 'static) -> Self {
348 self.on_click = Some(Box::new(handler));
349 self
350 }
351
352 fn bg_color(&self, cx: &App) -> Hsla {
353 let style = self.style.clone();
354 match (style, self.filled) {
355 (ui::ToggleStyle::Ghost, false) => cx.theme().colors().ghost_element_background,
356 (ui::ToggleStyle::Ghost, true) => cx.theme().colors().element_background,
357 (ui::ToggleStyle::ElevationBased(_), false) => gpui::transparent_black(),
358 (ui::ToggleStyle::ElevationBased(elevation), true) => elevation.darker_bg(cx),
359 (ui::ToggleStyle::Custom(_), false) => gpui::transparent_black(),
360 (ui::ToggleStyle::Custom(color), true) => color.opacity(0.2),
361 }
362 }
363
364 fn border_color(&self, cx: &App) -> Hsla {
365 if self.disabled {
366 return cx.theme().colors().border_variant;
367 }
368
369 match self.style.clone() {
370 ui::ToggleStyle::Ghost => cx.theme().colors().border,
371 ui::ToggleStyle::ElevationBased(_) => cx.theme().colors().border,
372 ui::ToggleStyle::Custom(color) => color.opacity(0.3),
373 }
374 }
375}
376
377impl gpui::RenderOnce for MarkdownCheckbox {
378 fn render(self, _: &mut Window, cx: &mut App) -> impl IntoElement {
379 let group_id = format!("checkbox_group_{:?}", self.id);
380 let color = if self.disabled {
381 Color::Disabled
382 } else {
383 Color::Selected
384 };
385 let icon_size_small = IconSize::Custom(self.render_cx.scaled_rems(14. / 16.)); // was IconSize::Small
386 let icon = match self.toggle_state {
387 ToggleState::Selected => {
388 if self.placeholder {
389 None
390 } else {
391 Some(
392 ui::Icon::new(IconName::Check)
393 .size(icon_size_small)
394 .color(color),
395 )
396 }
397 }
398 ToggleState::Indeterminate => Some(
399 ui::Icon::new(IconName::Dash)
400 .size(icon_size_small)
401 .color(color),
402 ),
403 ToggleState::Unselected => None,
404 };
405
406 let bg_color = self.bg_color(cx);
407 let border_color = self.border_color(cx);
408 let hover_border_color = border_color.alpha(0.7);
409
410 let size = self.render_cx.scaled_rems(1.25); // was Self::container_size(); (20px)
411
412 let checkbox = h_flex()
413 .id(self.id.clone())
414 .justify_center()
415 .items_center()
416 .size(size)
417 .group(group_id.clone())
418 .child(
419 div()
420 .flex()
421 .flex_none()
422 .justify_center()
423 .items_center()
424 .m(self.render_cx.scaled_rems(0.25)) // was .m_1
425 .size(self.render_cx.scaled_rems(1.0)) // was .size_4
426 .rounded(self.render_cx.scaled_rems(0.125)) // was .rounded_xs
427 .border_1()
428 .bg(bg_color)
429 .border_color(border_color)
430 .when(self.disabled, |this| this.cursor_not_allowed())
431 .when(self.disabled, |this| {
432 this.bg(cx.theme().colors().element_disabled.opacity(0.6))
433 })
434 .when(!self.disabled, |this| {
435 this.group_hover(group_id.clone(), |el| el.border_color(hover_border_color))
436 })
437 .when(self.placeholder, |this| {
438 this.child(
439 div()
440 .flex_none()
441 .rounded_full()
442 .bg(color.color(cx).alpha(0.5))
443 .size(self.render_cx.scaled_rems(0.25)), // was .size_1
444 )
445 })
446 .children(icon),
447 );
448
449 h_flex()
450 .id(self.id)
451 .gap(ui::DynamicSpacing::Base06.rems(cx))
452 .child(checkbox)
453 .when_some(
454 self.on_click.filter(|_| !self.disabled),
455 |this, on_click| {
456 this.on_click(move |_, window, cx| {
457 on_click(&self.toggle_state.inverse(), window, cx)
458 })
459 },
460 )
461 // TODO: Allow label size to be different from default.
462 // TODO: Allow label color to be different from muted.
463 .when_some(self.label, |this, label| {
464 this.child(Label::new(label).color(Color::Muted))
465 })
466 .when_some(self.tooltip, |this, tooltip| {
467 this.tooltip(move |window, cx| tooltip(window, cx))
468 })
469 }
470}
471
472fn calculate_table_columns_count(rows: &Vec<ParsedMarkdownTableRow>) -> usize {
473 let mut actual_column_count = 0;
474 for row in rows {
475 actual_column_count = actual_column_count.max(
476 row.columns
477 .iter()
478 .map(|column| column.col_span)
479 .sum::<usize>(),
480 );
481 }
482 actual_column_count
483}
484
485fn render_markdown_table(parsed: &ParsedMarkdownTable, cx: &mut RenderContext) -> AnyElement {
486 let actual_header_column_count = calculate_table_columns_count(&parsed.header);
487 let actual_body_column_count = calculate_table_columns_count(&parsed.body);
488 let max_column_count = std::cmp::max(actual_header_column_count, actual_body_column_count);
489
490 let total_rows = parsed.header.len() + parsed.body.len();
491
492 // Track which grid cells are occupied by spanning cells
493 let mut grid_occupied = vec![vec![false; max_column_count]; total_rows];
494
495 let mut cells = Vec::with_capacity(total_rows * max_column_count);
496
497 for (row_idx, row) in parsed.header.iter().chain(parsed.body.iter()).enumerate() {
498 let mut col_idx = 0;
499
500 for (cell_idx, cell) in row.columns.iter().enumerate() {
501 // Skip columns occupied by row-spanning cells from previous rows
502 while col_idx < max_column_count && grid_occupied[row_idx][col_idx] {
503 col_idx += 1;
504 }
505
506 if col_idx >= max_column_count {
507 break;
508 }
509
510 let alignment = parsed
511 .column_alignments
512 .get(cell_idx)
513 .copied()
514 .unwrap_or_else(|| {
515 if cell.is_header {
516 ParsedMarkdownTableAlignment::Center
517 } else {
518 ParsedMarkdownTableAlignment::None
519 }
520 });
521
522 let container = match alignment {
523 ParsedMarkdownTableAlignment::Left | ParsedMarkdownTableAlignment::None => div(),
524 ParsedMarkdownTableAlignment::Center => v_flex().items_center(),
525 ParsedMarkdownTableAlignment::Right => v_flex().items_end(),
526 };
527
528 let cell_element = container
529 .col_span(cell.col_span.min(max_column_count - col_idx) as u16)
530 .row_span(cell.row_span.min(total_rows - row_idx) as u16)
531 .children(render_markdown_text(&cell.children, cx))
532 .px_2()
533 .py_1()
534 .border_1()
535 .size_full()
536 .border_color(cx.border_color)
537 .when(cell.is_header, |this| {
538 this.bg(cx.title_bar_background_color)
539 })
540 .when(cell.row_span > 1, |this| this.justify_center())
541 .when(row_idx % 2 == 1, |this| this.bg(cx.panel_background_color));
542
543 cells.push(cell_element);
544
545 // Mark grid positions as occupied for row-spanning cells
546 for r in 0..cell.row_span {
547 for c in 0..cell.col_span {
548 if row_idx + r < total_rows && col_idx + c < max_column_count {
549 grid_occupied[row_idx + r][col_idx + c] = true;
550 }
551 }
552 }
553
554 col_idx += cell.col_span;
555 }
556
557 // Fill remaining columns with empty cells if needed
558 while col_idx < max_column_count {
559 if grid_occupied[row_idx][col_idx] {
560 col_idx += 1;
561 continue;
562 }
563
564 let empty_cell = div()
565 .border_1()
566 .size_full()
567 .border_color(cx.border_color)
568 .when(row_idx % 2 == 1, |this| this.bg(cx.panel_background_color));
569
570 cells.push(empty_cell);
571 col_idx += 1;
572 }
573 }
574
575 cx.with_common_p(div())
576 .grid()
577 .size_full()
578 .grid_cols(max_column_count as u16)
579 .border_1()
580 .border_color(cx.border_color)
581 .children(cells)
582 .into_any()
583}
584
585fn render_markdown_block_quote(
586 parsed: &ParsedMarkdownBlockQuote,
587 cx: &mut RenderContext,
588) -> AnyElement {
589 cx.indent += 1;
590
591 let children: Vec<AnyElement> = parsed
592 .children
593 .iter()
594 .enumerate()
595 .map(|(ix, child)| {
596 cx.with_last_child(ix + 1 == parsed.children.len(), |cx| {
597 render_markdown_block(child, cx)
598 })
599 })
600 .collect();
601
602 cx.indent -= 1;
603
604 cx.with_common_p(div())
605 .child(
606 div()
607 .border_l_4()
608 .border_color(cx.border_color)
609 .pl_3()
610 .children(children),
611 )
612 .into_any()
613}
614
615fn render_markdown_code_block(
616 parsed: &ParsedMarkdownCodeBlock,
617 cx: &mut RenderContext,
618) -> AnyElement {
619 let body = if let Some(highlights) = parsed.highlights.as_ref() {
620 StyledText::new(parsed.contents.clone()).with_default_highlights(
621 &cx.buffer_text_style,
622 highlights.iter().filter_map(|(range, highlight_id)| {
623 highlight_id
624 .style(cx.syntax_theme.as_ref())
625 .map(|style| (range.clone(), style))
626 }),
627 )
628 } else {
629 StyledText::new(parsed.contents.clone())
630 };
631
632 let copy_block_button = IconButton::new("copy-code", IconName::Copy)
633 .icon_size(IconSize::Small)
634 .on_click({
635 let contents = parsed.contents.clone();
636 move |_, _window, cx| {
637 cx.write_to_clipboard(ClipboardItem::new_string(contents.to_string()));
638 }
639 })
640 .tooltip(Tooltip::text("Copy code block"))
641 .visible_on_hover("markdown-block");
642
643 cx.with_common_p(div())
644 .font_family(cx.buffer_font_family.clone())
645 .px_3()
646 .py_3()
647 .bg(cx.code_block_background_color)
648 .rounded_sm()
649 .child(body)
650 .child(
651 div()
652 .h_flex()
653 .absolute()
654 .right_1()
655 .top_1()
656 .child(copy_block_button),
657 )
658 .into_any()
659}
660
661fn render_markdown_paragraph(parsed: &MarkdownParagraph, cx: &mut RenderContext) -> AnyElement {
662 cx.with_common_p(div())
663 .children(render_markdown_text(parsed, cx))
664 .flex()
665 .flex_col()
666 .into_any_element()
667}
668
669fn render_markdown_text(parsed_new: &MarkdownParagraph, cx: &mut RenderContext) -> Vec<AnyElement> {
670 let mut any_element = Vec::with_capacity(parsed_new.len());
671 // these values are cloned in-order satisfy borrow checker
672 let syntax_theme = cx.syntax_theme.clone();
673 let workspace_clone = cx.workspace.clone();
674 let code_span_bg_color = cx.code_span_background_color;
675 let text_style = cx.text_style.clone();
676 let link_color = cx.link_color;
677
678 for parsed_region in parsed_new {
679 match parsed_region {
680 MarkdownParagraphChunk::Text(parsed) => {
681 let element_id = cx.next_id(&parsed.source_range);
682
683 let highlights = gpui::combine_highlights(
684 parsed.highlights.iter().filter_map(|(range, highlight)| {
685 highlight
686 .to_highlight_style(&syntax_theme)
687 .map(|style| (range.clone(), style))
688 }),
689 parsed.regions.iter().zip(&parsed.region_ranges).filter_map(
690 |(region, range)| {
691 if region.code {
692 Some((
693 range.clone(),
694 HighlightStyle {
695 background_color: Some(code_span_bg_color),
696 ..Default::default()
697 },
698 ))
699 } else if region.link.is_some() {
700 Some((
701 range.clone(),
702 HighlightStyle {
703 color: Some(link_color),
704 ..Default::default()
705 },
706 ))
707 } else {
708 None
709 }
710 },
711 ),
712 );
713 let mut links = Vec::new();
714 let mut link_ranges = Vec::new();
715 for (range, region) in parsed.region_ranges.iter().zip(&parsed.regions) {
716 if let Some(link) = region.link.clone() {
717 links.push(link);
718 link_ranges.push(range.clone());
719 }
720 }
721 let workspace = workspace_clone.clone();
722 let element = div()
723 .child(
724 InteractiveText::new(
725 element_id,
726 StyledText::new(parsed.contents.clone())
727 .with_default_highlights(&text_style, highlights),
728 )
729 .tooltip({
730 let links = links.clone();
731 let link_ranges = link_ranges.clone();
732 move |idx, _, cx| {
733 for (ix, range) in link_ranges.iter().enumerate() {
734 if range.contains(&idx) {
735 return Some(LinkPreview::new(&links[ix].to_string(), cx));
736 }
737 }
738 None
739 }
740 })
741 .on_click(
742 link_ranges,
743 move |clicked_range_ix, window, cx| match &links[clicked_range_ix] {
744 Link::Web { url } => cx.open_url(url),
745 Link::Path { path, .. } => {
746 if let Some(workspace) = &workspace {
747 _ = workspace.update(cx, |workspace, cx| {
748 workspace
749 .open_abs_path(
750 normalize_path(path.clone().as_path()),
751 OpenOptions {
752 visible: Some(OpenVisible::None),
753 ..Default::default()
754 },
755 window,
756 cx,
757 )
758 .detach();
759 });
760 }
761 }
762 },
763 ),
764 )
765 .into_any();
766 any_element.push(element);
767 }
768
769 MarkdownParagraphChunk::Image(image) => {
770 any_element.push(render_markdown_image(image, cx));
771 }
772 }
773 }
774
775 any_element
776}
777
778fn render_markdown_rule(cx: &mut RenderContext) -> AnyElement {
779 let rule = div().w_full().h(cx.scaled_rems(0.125)).bg(cx.border_color);
780 div().py(cx.scaled_rems(0.5)).child(rule).into_any()
781}
782
783fn render_markdown_image(image: &Image, cx: &mut RenderContext) -> AnyElement {
784 let image_resource = match image.link.clone() {
785 Link::Web { url } => Resource::Uri(url.into()),
786 Link::Path { path, .. } => Resource::Path(Arc::from(path)),
787 };
788
789 let element_id = cx.next_id(&image.source_range);
790 let workspace = cx.workspace.clone();
791
792 div()
793 .id(element_id)
794 .cursor_pointer()
795 .child(
796 img(ImageSource::Resource(image_resource))
797 .max_w_full()
798 .with_fallback({
799 let alt_text = image.alt_text.clone();
800 move || div().children(alt_text.clone()).into_any_element()
801 })
802 .when_some(image.height, |this, height| this.h(height))
803 .when_some(image.width, |this, width| this.w(width)),
804 )
805 .tooltip({
806 let link = image.link.clone();
807 let alt_text = image.alt_text.clone();
808 move |_, cx| {
809 InteractiveMarkdownElementTooltip::new(
810 Some(alt_text.clone().unwrap_or(link.to_string().into())),
811 "open image",
812 cx,
813 )
814 .into()
815 }
816 })
817 .on_click({
818 let link = image.link.clone();
819 move |_, window, cx| {
820 if window.modifiers().secondary() {
821 match &link {
822 Link::Web { url } => cx.open_url(url),
823 Link::Path { path, .. } => {
824 if let Some(workspace) = &workspace {
825 _ = workspace.update(cx, |workspace, cx| {
826 workspace
827 .open_abs_path(
828 path.clone(),
829 OpenOptions {
830 visible: Some(OpenVisible::None),
831 ..Default::default()
832 },
833 window,
834 cx,
835 )
836 .detach();
837 });
838 }
839 }
840 }
841 }
842 }
843 })
844 .into_any()
845}
846
847struct InteractiveMarkdownElementTooltip {
848 tooltip_text: Option<SharedString>,
849 action_text: SharedString,
850}
851
852impl InteractiveMarkdownElementTooltip {
853 pub fn new(
854 tooltip_text: Option<SharedString>,
855 action_text: impl Into<SharedString>,
856 cx: &mut App,
857 ) -> Entity<Self> {
858 let tooltip_text = tooltip_text.map(|t| util::truncate_and_trailoff(&t, 50).into());
859
860 cx.new(|_cx| Self {
861 tooltip_text,
862 action_text: action_text.into(),
863 })
864 }
865}
866
867impl Render for InteractiveMarkdownElementTooltip {
868 fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
869 tooltip_container(cx, |el, _| {
870 let secondary_modifier = Keystroke {
871 modifiers: Modifiers::secondary_key(),
872 ..Default::default()
873 };
874
875 el.child(
876 v_flex()
877 .gap_1()
878 .when_some(self.tooltip_text.clone(), |this, text| {
879 this.child(Label::new(text).size(LabelSize::Small))
880 })
881 .child(
882 Label::new(format!(
883 "{}-click to {}",
884 secondary_modifier, self.action_text
885 ))
886 .size(LabelSize::Small)
887 .color(Color::Muted),
888 ),
889 )
890 })
891 }
892}
893
894#[cfg(test)]
895mod tests {
896 use super::*;
897 use crate::markdown_elements::ParsedMarkdownTableColumn;
898 use crate::markdown_elements::ParsedMarkdownText;
899
900 fn text(text: &str) -> MarkdownParagraphChunk {
901 MarkdownParagraphChunk::Text(ParsedMarkdownText {
902 source_range: 0..text.len(),
903 contents: SharedString::new(text),
904 highlights: Default::default(),
905 region_ranges: Default::default(),
906 regions: Default::default(),
907 })
908 }
909
910 fn column(
911 col_span: usize,
912 row_span: usize,
913 children: Vec<MarkdownParagraphChunk>,
914 ) -> ParsedMarkdownTableColumn {
915 ParsedMarkdownTableColumn {
916 col_span,
917 row_span,
918 is_header: false,
919 children,
920 }
921 }
922
923 fn column_with_row_span(
924 col_span: usize,
925 row_span: usize,
926 children: Vec<MarkdownParagraphChunk>,
927 ) -> ParsedMarkdownTableColumn {
928 ParsedMarkdownTableColumn {
929 col_span,
930 row_span,
931 is_header: false,
932 children,
933 }
934 }
935
936 #[test]
937 fn test_calculate_table_columns_count() {
938 assert_eq!(0, calculate_table_columns_count(&vec![]));
939
940 assert_eq!(
941 1,
942 calculate_table_columns_count(&vec![ParsedMarkdownTableRow::with_columns(vec![
943 column(1, 1, vec![text("column1")])
944 ])])
945 );
946
947 assert_eq!(
948 2,
949 calculate_table_columns_count(&vec![ParsedMarkdownTableRow::with_columns(vec![
950 column(1, 1, vec![text("column1")]),
951 column(1, 1, vec![text("column2")]),
952 ])])
953 );
954
955 assert_eq!(
956 2,
957 calculate_table_columns_count(&vec![ParsedMarkdownTableRow::with_columns(vec![
958 column(2, 1, vec![text("column1")])
959 ])])
960 );
961
962 assert_eq!(
963 3,
964 calculate_table_columns_count(&vec![ParsedMarkdownTableRow::with_columns(vec![
965 column(1, 1, vec![text("column1")]),
966 column(2, 1, vec![text("column2")]),
967 ])])
968 );
969
970 assert_eq!(
971 2,
972 calculate_table_columns_count(&vec![
973 ParsedMarkdownTableRow::with_columns(vec![
974 column(1, 1, vec![text("column1")]),
975 column(1, 1, vec![text("column2")]),
976 ]),
977 ParsedMarkdownTableRow::with_columns(vec![column(1, 1, vec![text("column1")]),])
978 ])
979 );
980
981 assert_eq!(
982 3,
983 calculate_table_columns_count(&vec![
984 ParsedMarkdownTableRow::with_columns(vec![
985 column(1, 1, vec![text("column1")]),
986 column(1, 1, vec![text("column2")]),
987 ]),
988 ParsedMarkdownTableRow::with_columns(vec![column(3, 3, vec![text("column1")]),])
989 ])
990 );
991 }
992
993 #[test]
994 fn test_row_span_support() {
995 assert_eq!(
996 3,
997 calculate_table_columns_count(&vec![
998 ParsedMarkdownTableRow::with_columns(vec![
999 column_with_row_span(1, 2, vec![text("spans 2 rows")]),
1000 column(1, 1, vec![text("column2")]),
1001 column(1, 1, vec![text("column3")]),
1002 ]),
1003 ParsedMarkdownTableRow::with_columns(vec![
1004 // First column is covered by row span from above
1005 column(1, 1, vec![text("column2 row2")]),
1006 column(1, 1, vec![text("column3 row2")]),
1007 ])
1008 ])
1009 );
1010
1011 assert_eq!(
1012 4,
1013 calculate_table_columns_count(&vec![
1014 ParsedMarkdownTableRow::with_columns(vec![
1015 column_with_row_span(1, 3, vec![text("spans 3 rows")]),
1016 column_with_row_span(2, 1, vec![text("spans 2 cols")]),
1017 column(1, 1, vec![text("column4")]),
1018 ]),
1019 ParsedMarkdownTableRow::with_columns(vec![
1020 // First column covered by row span
1021 column(1, 1, vec![text("column2")]),
1022 column(1, 1, vec![text("column3")]),
1023 column(1, 1, vec![text("column4")]),
1024 ]),
1025 ParsedMarkdownTableRow::with_columns(vec![
1026 // First column still covered by row span
1027 column(3, 1, vec![text("spans 3 cols")]),
1028 ])
1029 ])
1030 );
1031 }
1032}