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path: root/helix-term/src/ui/completion.rs
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* Remove unnecessary completion support check (likely an artifact)Philipp Mildenberger2023-05-18
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* Adds support for multiple language servers per language.Philipp Mildenberger2023-05-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Language Servers are now configured in a separate table in `languages.toml`: ```toml [langauge-server.mylang-lsp] command = "mylang-lsp" args = ["--stdio"] config = { provideFormatter = true } [language-server.efm-lsp-prettier] command = "efm-langserver" [language-server.efm-lsp-prettier.config] documentFormatting = true languages = { typescript = [ { formatCommand ="prettier --stdin-filepath ${INPUT}", formatStdin = true } ] } ``` The language server for a language is configured like this (`typescript-language-server` is configured by default): ```toml [[language]] name = "typescript" language-servers = [ { name = "efm-lsp-prettier", only-features = [ "format" ] }, "typescript-language-server" ] ``` or equivalent: ```toml [[language]] name = "typescript" language-servers = [ { name = "typescript-language-server", except-features = [ "format" ] }, "efm-lsp-prettier" ] ``` Each requested LSP feature is priorized in the order of the `language-servers` array. For example the first `goto-definition` supported language server (in this case `typescript-language-server`) will be taken for the relevant LSP request (command `goto_definition`). If no `except-features` or `only-features` is given all features for the language server are enabled, as long as the language server supports these. If it doesn't the next language server which supports the feature is tried. The list of supported features are: - `format` - `goto-definition` - `goto-declaration` - `goto-type-definition` - `goto-reference` - `goto-implementation` - `signature-help` - `hover` - `document-highlight` - `completion` - `code-action` - `workspace-command` - `document-symbols` - `workspace-symbols` - `diagnostics` - `rename-symbol` - `inlay-hints` Another side-effect/difference that comes with this PR, is that only one language server instance is started if different languages use the same language server.
* clarify comments about completion savepointsPascal Kuthe2023-05-18
| | | | Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* only resolve completion items oncePascal Kuthe2023-05-18
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* resolve completions before applying transactionsPascal Kuthe2023-05-18
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* correctly handle completion rerequestPascal Kuthe2023-05-18
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* robustly handle invalid LSP ranges (#6512)Pascal Kuthe2023-04-03
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* Hide signature help if it overlays completion menu (#5523)Pascal Kuthe2023-03-31
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* indent snippets to line indent instead of completion start (#6263)Pascal Kuthe2023-03-11
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* treat replace/insertmode consistently, default to insertPascal Kuthe2023-03-10
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* fix snippet bugs and multicursor completion edgecasesPascal Kuthe2023-03-10
| | | | | | | | | | | | | | | | Multicursor completions may overlap and therefore overlapping completions must be dropped to avoid crashes. Furthermore, multicursor edits might simply be out of range if the word before/after the cursor is shorter. This currently leads to crashes, instead these selections are now also removed for completions. This commit also significantly refactors snippet transaction generation so that tabstops behave correctly with the above rules. Furthermore, snippet tabstops need to be carefully mapped to ensure their position is correct and consistent with our selection semantics. Finally, we now keep a partially updated Rope while creating snippet transactions so that we can fill information into snippets that depends on the position in the document.
* allow LSP insert text to replace non-matching prefixes (#5469)Taylor C. Richberger2023-03-10
| | | | | | | Most LSPs will complete case-insensitive matches, particularly from lowercase to uppercase. In some cases, notably Pyright, this is given as a simple insert text instead of TextEdit. When this happens, the prefix text was left unedited.
* store multiple snapshots on the document at oncePascal Kuthe2023-03-09
| | | | | | | | | | | | | | | | | | Fixing autocomplete required moving the document savepoint before the asynchronous completion request. However, this in turn causes new bugs: If the completion popup is open, the savepoint is restored when the popup closes (or another entry is selected). However, at that point a new completion request might already have been created which would have replaced the new savepoint (therefore leading to incorrectly applied complies). This commit fixes that bug by allowing in arbitrary number of savepoints to be tracked on the document. The savepoints are reference counted and therefore remain valid as long as any reference to them remains. Weak reference are stored on the document and any reference that can not be upgraded anymore (hence no strong reference remain) are automatically discarded.
* save selection before completion savepointPascal Kuthe2023-03-09
| | | | | | | | | Currently, the selection is not saved/restored when completion checkpoints are applied. This is usually fine because undoing changes usually restores maps selections back in insert mode. But this is not always the case and especially problematic in the presence of multi-cursor completions (since completions are applied relative to the selection/cursor) and snippets (which can change the selection)
* Handle snippets for LSPs not providing offsets for completionAndrii Grynenko2023-03-08
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* Render every LSP snippets for every cursorAndrii Grynenko2023-03-08
| | | | | | | This refactors the snippet logic to be largely unaware of the rest of the document. The completion application logic is moved into generate_transaction_from_snippet which is extended to support dynamically computing replacement text.
* Delete snippet placeholders when accepting completionPascal Kuthe2023-03-08
| | | | | | | When accepting a snippet completion we automatically delete the placeholders for now as doing so manual is quite cumbersome. In the future we should keep these as a mark + virtual text that is automatically removed once the cursor moves there.
* Apply snippets as transactionsMichael Davis2023-03-08
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* Use Popup::ignore_escape_key helper for completion (#6006)Michael Davis2023-02-16
| | | | | | | | The completion component has a separate branch for handling the Escape key but it can use the `ignore_escape_key` helper added for signature-help instead. This should not cause a behavior change - it's just cleaning up the completion component.
* feat(ui): deprecated completions (#5932)Matouš Dzivjak2023-02-13
| | | | | | | | | | | | | | | | | | * feat(ui): deprecated completions Mark deprecated completions using strike-through (CROSSED_OUT modifier). The deprection information is taken either from the `deprecated` field of the completion item or from the completion tags. The field seems to be the older way of passing the deprecated information and it was already marked as deprecated for Symbol. In completion item the field is still valid but it seems that the LSP is moving in the general direction of using tags for this kind of information and as such relying on tags as well seems reasonable and future-proof.
* Fix completion doc popup area calculation logicGokul Soumya2023-02-11
| | | | | Earlier the doc popup would draw over the compeltion popup itself and sometimes over the cursor too.
* Create popup rect instead of using raw valuesGokul Soumya2023-02-11
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* Refactor our Markdown construction in completion docGokul Soumya2023-02-11
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* Rename completion doc popup area variablesGokul Soumya2023-02-11
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* Use early return in rendering completion docGokul Soumya2023-02-11
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* rework positioning/rendering and enable softwrap/virtual text (#5420)Pascal Kuthe2023-01-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * rework positioning/rendering, enables softwrap/virtual text This commit is a large rework of the core text positioning and rendering code in helix to remove the assumption that on-screen columns/lines correspond to text columns/lines. A generic `DocFormatter` is introduced that positions graphemes on and is used both for rendering and for movements/scrolling. Both virtual text support (inline, grapheme overlay and multi-line) and a capable softwrap implementation is included. fix picker highlight cleanup doc formatter, use word bondaries for wrapping make visual vertical movement a seperate commnad estimate line gutter width to improve performance cache cursor position cleanup and optimize doc formatter cleanup documentation fix typos Co-authored-by: Daniel Hines <d4hines@gmail.com> update documentation fix panic in last_visual_line funciton improve soft-wrap documentation add extend_visual_line_up/down commands fix non-visual vertical movement streamline virtual text highlighting, add softwrap indicator fix cursor position if softwrap is disabled improve documentation of text_annotations module avoid crashes if view anchor is out of bounds fix: consider horizontal offset when traslation char_idx -> vpos improve default configuration fix: mixed up horizontal and vertical offset reset view position after config reload apply suggestions from review disabled softwrap for very small screens to avoid endless spin fix wrap_indicator setting fix bar cursor disappearring on the EOF character add keybinding for linewise vertical movement fix: inconsistent gutter highlights improve virtual text API make scope idx lookup more ergonomic allow overlapping overlays correctly track char_pos for virtual text adjust configuration deprecate old position fucntions fix infinite loop in highlight lookup fix gutter style fix formatting document max-line-width interaction with softwrap change wrap-indicator example to use empty string fix: rare panic when view is in invalid state (bis) * Apply suggestions from code review Co-authored-by: Michael Davis <mcarsondavis@gmail.com> * improve documentation for positoning functions * simplify tests * fix documentation of Grapheme::width * Apply suggestions from code review Co-authored-by: Michael Davis <mcarsondavis@gmail.com> * add explicit drop invocation * Add explicit MoveFn type alias * add docuntation to Editor::cursor_cache * fix a few typos * explain use of allow(deprecated) * make gj and gk extend in select mode * remove unneded debug and TODO * mark tab_width_at #[inline] * add fast-path to move_vertically_visual in case softwrap is disabled * rename first_line to first_visual_line * simplify duplicate if/else --------- Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* Remove apply_transaction helper (#5598)Ivan Tham2023-01-21
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* Replace menu::Item::{row, label} with format()Gokul Soumya2023-01-18
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* Only write newlines in menu selection popup if the lsp returns detail (#4902)ath32022-12-09
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* Apply completion edits to all cursors (#4496)Michael Davis2022-12-06
| | | | | | | | Completion edits - either basic `insert_text` strings or structured `text_edit`s - are assumed by the LSP spec to apply to the current cursor (or at least the trigger point). We can use the range (if any) and text given by the Language Server to create a transaction that changes all ranges in the current selection though, allowing auto- complete to affect multiple cursors.
* lsp: Check server provider capabilities (#3554)Michael Davis2022-11-22
| | | | | | | | | | | | | | Language Servers may signal that they do not support a method in the initialization result (server capabilities). We can check these when making LSP requests and hint in the status line when a method is not supported by the server. This can also prevent crashes in servers which assume that clients do not send requests for methods which are disabled in the server capabilities. There is an existing pattern the LSP client module where a method returns `Option<impl Future<Output = Result<_>>>` with `None` signaling no support in the server. This change extends this pattern to the rest of the client functions. And we log an error to the statusline for manually triggered LSP calls which return `None`.
* lsp: Resolve completion item asynchronously on idle-timeout (#4781)Michael Davis2022-11-18
| | | | | | | | | | | | | | | | | | | | | d7d0d5ffb79b6f2e09c6ab8af6e112c41e6f73e8 resolves completion items on the idle-timeout event. The `Completion::resolve_completion_item` function blocks on the LSP request though, which blocks the compositor and in turn blocks the event loop. So until the language server returns the resolved completion item, Helix is unable to respond to keypresses or other LSP messages. This is typically ok since the resolution request is fast but for some language servers this can be problematic, and ideally we shouldn't be blocking like this anyways. When receiving a `completionItem/resolve` request, the Volar server sends a `workspace/configuration` request to Helix and blocks itself on the response, leading to a deadlock. Eventually the resolve request times out within Helix but Helix is locked up and unresponsive in that window. This change resolves the completion item without blocking the compositor.
* Popup scrollbar (#4449)Manos Mertzianis2022-11-15
| | | | | | | | | | | | | | | * init * cargo fmt * optimisation of the scrollbar render both for Menu and Popup. Toggling off scrollbar for Popup<Menu>, since Menu has its own * rendering scroll track * removed unnecessary cast * improve memory allocation * small correction
* `error!` on unknown `CompletionItemKind` (#4658)Marko Klobučar Ledinšćak2022-11-08
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* lsp: Support insertReplaceBlaž Hrastnik2022-11-08
| | | | Fixes #4473
* feat(lsp): LSP preselected items appear first in completion menu (#4480)lazytanuki2022-10-27
| | | | | * feat(lsp): LSP preselected items appear first in completion menu * fix: shorter diff
* lsp: Resolve completion items missing documentation on idle (#4406)Michael Davis2022-10-22
| | | | | | | | Some language servers may not send the `documentation` field if it is expensive to compute. Clients can request the missing field with a completionItem/resolve request. In this change we use the idle-timeout event to ensure that the current completion item is resolved.
* never sort menu items when no fuzzy matching is possiblePascal Kuthe2022-10-21
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* sort codeaction by their kind instead of alphabeticallyPascal Kuthe2022-10-21
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* Add a helper function for applying transactionsMichael Davis2022-10-11
| | | | | | It is easy to forget to call `Document::apply` and/or `View::apply` in the correct order. This commit introduces a helper function which closes over both calls.
* Apply transactions to ViewsMichael Davis2022-10-11
| | | | | | This change adds View::apply calls for all Document::apply call-sites, ensuring that changes to a document do not leave invalid entries in the View's jumplist.
* Derive Document language name from languages.toml name key (#3338)Michael Davis2022-08-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | * Derive Document language name from `languages.toml` `name` key This changes switches from deriving the language name from the `languages.toml` `scope` key to `name` (`language_id` in the `LanguageConfiguration` type). For the most part it works to derive the language name from scope by chopping off `source.` or `rsplit_once` on `.` but for some languages we have now like html (`text.html.basic`), it doesn't. This also should be a more accurate fallback for the `language_id` method which is used in LSP and currently uses the `rsplit_once` strategy. Here we expose the language's name as `language_name` on `Document` and replace ad-hoc calculations of the language name with the new method. This is most impactful for the `file-type` statusline element which is using `language_id`. * Use `Document::language_name` for the `file-type` statusline element The `file-type` indicator element in the statusline was using `Document::language_id` which is meant to be used to for telling Language Servers what language we're using. That works for languages with `language-server` configurations in `languages.toml` but shows text otherwise. The new `Document::language_name` method from the parent commit is a more accurate way to determine the language.
* Add bracketed paste (#3233)Charlie Groves2022-08-29
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* Add custom event type replacing crossterm's Event (#3169)Gokul Soumya2022-08-09
| | | | | | | | | | Ported over from 61365dfbf3 in the `gui` branch. This will allow adding our own events, most notably an idle timer event (useful for adding debounced input in [dynamic pickers][1] used by interactive global search and workspace symbols). [1]: https://github.com/helix-editor/helix/pull/3110 Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
* Add lsp signature help (#1755)Gokul Soumya2022-07-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add lsp signature help * Do not move signature help popup on multiple triggers * Highlight current parameter in signature help * Auto close signature help * Position signature help above to not block completion * Update signature help on backspace/insert mode delete * Add lsp.auto-signature-help config option * Add serde default annotation for LspConfig * Show LSP inactive message only if signature help is invoked manually * Do not assume valid signature help response from LSP Malformed LSP responses are common, and these should not crash the editor. * Check signature help capability before sending request * Reuse Open enum for PositionBias in popup * Close signature popup and exit insert mode on escape * Add config to control signature help docs display * Use new Margin api in signature help * Invoke signature help on changing to insert mode
* Reuse menu::Item trait in picker (#2814)Gokul Soumya2022-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | * Refactor menu::Item to accomodate external state Will be useful for storing editor state when reused by pickers. * Add some type aliases for readability * Reuse menu::Item trait in picker This opens the way for merging the menu and picker code in the future, since a picker is essentially a menu + prompt. More excitingly, this change will also allow aligning items in the picker, which would be useful (for example) in the command palette for aligning the descriptions to the left and the keybinds to the right in two separate columns. The item formatting of each picker has been kept as is, even though there is room for improvement now that we can format the data into columns, since that is better tackled in a separate PR. * Rename menu::Item::EditorData to Data * Call and inline filter_text() in sort_text() completion * Rename diagnostic picker's Item::Data
* Restore document state on completion cancel (#2096)Andrey Tkachenko2022-04-20
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* Fixes #1991 LSP Auto-import (#2088)Andrey Tkachenko2022-04-16
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* minor: Remove some outdated commentsBlaž Hrastnik2022-03-03
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* Make repeat operator work with completion edits (#1640)Mateusz S. Szczygieł2022-03-01
| | | | | | | | | | | * add basic completion replay * use transaction as the last completion * completion replay only on trigger position * cache changes in CompletionAction Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>