108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
// Fenrir console screen reader.
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// Copyright (c) 2026 Storm Dragon
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// SPDX-License-Identifier: GPL-3.0-or-later
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package internalui
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import (
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gridmodel "git.stormux.org/storm/screenreader-common/internalui/grid"
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"strings"
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"unicode"
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"unicode/utf8"
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)
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// Grid selections index Choices, even while the visible results are filtered.
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// Choice IDs remain opaque to the model and can carry a host-owned value.
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func (s *Session) grid_matches(c Control) []int {
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var matches []int
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prefix := strings.ToLower(c.Text)
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for index, choice := range c.Choices {
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if !choice.Disabled && strings.HasPrefix(strings.ToLower(s.choice_label(choice)), prefix) {
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matches = append(matches, index)
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}
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}
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return matches
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}
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func (s *Session) filter_grid(c *Control) {
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c.Selected = -1
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if matches := s.grid_matches(*c); len(matches) > 0 {
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c.Selected = matches[0]
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}
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}
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func (s *Session) describe_grid(c Control) string {
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matches := s.grid_matches(c)
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for position, index := range matches {
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if index == c.Selected {
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label := s.choice_label(c.Choices[index])
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return gridmodel.Describe(label, position, len(matches), c.Columns, s.announceGridCoordinates, s.announceItemPosition, s.messages)
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}
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}
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return s.messages.T("No matches")
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}
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func (s *Session) grid(c *Control, key Key) Result {
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if key.Ctrl && key.Name != "backspace" {
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return Result{}
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}
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if key.Name == "backspace" || (key.Name == "" || key.Name == "space") && key.Text != "" && !key.Ctrl {
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runes := []rune(c.Text)
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if key.Name == "backspace" {
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if key.Ctrl {
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runes = nil
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} else if len(runes) > 0 {
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runes = runes[:len(runes)-1]
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}
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} else {
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if !utf8.ValidString(key.Text) {
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return Result{}
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}
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for _, char := range key.Text {
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if !unicode.IsPrint(char) {
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return Result{}
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}
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}
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if len(runes)+len([]rune(key.Text)) > 4096 {
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return Result{}
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}
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runes = append(runes, []rune(key.Text)...)
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}
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c.Text = string(runes)
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s.filter_grid(c)
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query := s.messages.T("Search cleared")
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if c.Text != "" {
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query = s.messages.Format("Search {0}", c.Text)
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}
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return Result{Speech: query + ". " + s.describe_grid(*c)}
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}
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matches := s.grid_matches(*c)
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if len(matches) == 0 {
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return Result{Speech: s.messages.T("No matches")}
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}
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position := 0
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for current, index := range matches {
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if index == c.Selected {
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position = current
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break
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}
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}
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if key.Name == "enter" {
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return Result{Action: c.Action}
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}
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if key.Name == "delete" {
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if key.Repeat {
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return Result{}
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}
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return Result{Action: c.DeleteAction}
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}
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var handled bool
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position, handled = gridmodel.Move(position, len(matches), c.Columns, key.Name)
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if !handled {
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return Result{}
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}
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c.Selected = matches[position]
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return Result{Speech: s.describe_grid(*c)}
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}
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