Phase 3c complete: syntax highlighting and configurable keybindings (Steps 52, 54)

Step 52: SyntaxHighlighter walks tree-sitter CST to produce colored
token spans (keyword, string, comment, number, function, parameter,
type, operator, etc.) for Python, C++, and Elisp.

Step 54: KeybindingManager with swappable profiles — VSCode (default),
JetBrains, and Emacs. Each profile maps 25+ actions (file, edit,
search, nav, view, code, build) to key combos. Supports custom
overrides and reverse lookup.

Design direction: editor targets VSCode/JetBrains look-and-feel.
Keybinding profile selectable at startup. VSCode is default.

Phase 3c totals: 37/37 tests pass across 5 steps (50-54).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Bill
2026-02-08 16:12:10 -07:00
parent 742c33d813
commit 5190e12b89
6 changed files with 1090 additions and 13 deletions

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#pragma once
// Step 54: Configurable keybinding profiles
//
// KeybindingManager provides keybinding lookup with swappable profiles.
// Profiles: VSCode (default), JetBrains, Emacs.
// Each profile maps action names to key combinations.
// The editor queries this at runtime to dispatch key events.
#include <string>
#include <map>
#include <vector>
// Modifier flags (bitmask)
enum KeyMod : int {
MOD_NONE = 0,
MOD_CTRL = 1 << 0,
MOD_SHIFT = 1 << 1,
MOD_ALT = 1 << 2,
MOD_SUPER = 1 << 3 // Cmd on Mac, Win on Windows
};
struct KeyCombo {
int key; // virtual key or character code (e.g. 'S', 'Z', 'F')
int modifiers; // bitmask of KeyMod
bool operator==(const KeyCombo& other) const {
return key == other.key && modifiers == other.modifiers;
}
std::string toString() const {
std::string result;
if (modifiers & MOD_CTRL) result += "Ctrl+";
if (modifiers & MOD_SHIFT) result += "Shift+";
if (modifiers & MOD_ALT) result += "Alt+";
if (modifiers & MOD_SUPER) result += "Super+";
if (key >= 'A' && key <= 'Z') {
result += (char)key;
} else if (key >= '0' && key <= '9') {
result += (char)key;
} else {
result += "[" + std::to_string(key) + "]";
}
return result;
}
};
enum class KeybindingProfile {
VSCode,
JetBrains,
Emacs
};
class KeybindingManager {
public:
KeybindingManager() {
setProfile(KeybindingProfile::VSCode);
}
void setProfile(KeybindingProfile profile) {
profile_ = profile;
bindings_.clear();
switch (profile) {
case KeybindingProfile::VSCode: loadVSCode(); break;
case KeybindingProfile::JetBrains: loadJetBrains(); break;
case KeybindingProfile::Emacs: loadEmacs(); break;
}
}
KeybindingProfile getProfile() const { return profile_; }
static const char* profileName(KeybindingProfile p) {
switch (p) {
case KeybindingProfile::VSCode: return "VSCode";
case KeybindingProfile::JetBrains: return "JetBrains";
case KeybindingProfile::Emacs: return "Emacs";
}
return "Unknown";
}
static KeybindingProfile profileFromName(const std::string& name) {
if (name == "VSCode" || name == "vscode") return KeybindingProfile::VSCode;
if (name == "JetBrains" || name == "jetbrains") return KeybindingProfile::JetBrains;
if (name == "Emacs" || name == "emacs") return KeybindingProfile::Emacs;
return KeybindingProfile::VSCode; // default
}
// Look up the key combo for an action (returns empty combo if not bound)
KeyCombo getBinding(const std::string& action) const {
auto it = bindings_.find(action);
if (it != bindings_.end()) return it->second;
return {0, MOD_NONE};
}
// Look up the action for a key combo (returns "" if not bound)
std::string getAction(const KeyCombo& combo) const {
for (const auto& [action, binding] : bindings_) {
if (binding == combo) return action;
}
return "";
}
// Override a single binding
void setBinding(const std::string& action, KeyCombo combo) {
bindings_[action] = combo;
}
// List all actions with their bindings
std::vector<std::string> listActions() const {
std::vector<std::string> actions;
for (const auto& [action, _] : bindings_) {
actions.push_back(action);
}
return actions;
}
// Available profiles
static std::vector<KeybindingProfile> availableProfiles() {
return {KeybindingProfile::VSCode, KeybindingProfile::JetBrains,
KeybindingProfile::Emacs};
}
private:
void bind(const std::string& action, int key, int mods) {
bindings_[action] = {key, mods};
}
// --- VSCode profile (default) ---
void loadVSCode() {
// File operations
bind("file.save", 'S', MOD_CTRL);
bind("file.saveAs", 'S', MOD_CTRL | MOD_SHIFT);
bind("file.open", 'O', MOD_CTRL);
bind("file.new", 'N', MOD_CTRL);
bind("file.close", 'W', MOD_CTRL);
// Edit operations
bind("edit.undo", 'Z', MOD_CTRL);
bind("edit.redo", 'Y', MOD_CTRL);
bind("edit.cut", 'X', MOD_CTRL);
bind("edit.copy", 'C', MOD_CTRL);
bind("edit.paste", 'V', MOD_CTRL);
bind("edit.selectAll", 'A', MOD_CTRL);
bind("edit.delete", 127, MOD_NONE); // Delete key
bind("edit.duplicateLine", 'D', MOD_CTRL | MOD_SHIFT);
// Search
bind("search.find", 'F', MOD_CTRL);
bind("search.replace", 'H', MOD_CTRL);
bind("search.findNext", 'G', MOD_CTRL);
bind("search.findPrev", 'G', MOD_CTRL | MOD_SHIFT);
bind("search.findInFiles", 'F', MOD_CTRL | MOD_SHIFT);
// Navigation
bind("nav.goToLine", 'G', MOD_CTRL);
bind("nav.goToFile", 'P', MOD_CTRL);
bind("nav.goToSymbol", 'O', MOD_CTRL | MOD_SHIFT);
// View
bind("view.toggleSidebar", 'B', MOD_CTRL);
bind("view.toggleTerminal", '`', MOD_CTRL);
bind("view.zoomIn", '=', MOD_CTRL);
bind("view.zoomOut", '-', MOD_CTRL);
bind("view.commandPalette", 'P', MOD_CTRL | MOD_SHIFT);
// Code
bind("code.comment", '/', MOD_CTRL);
bind("code.format", 'F', MOD_CTRL | MOD_SHIFT | MOD_ALT);
bind("code.goToDefinition", 0x0D, MOD_CTRL); // Ctrl+Enter or F12
bind("code.rename", 'R', MOD_CTRL | MOD_SHIFT);
// Build
bind("build.run", 'B', MOD_CTRL | MOD_SHIFT);
bind("build.build", 'B', MOD_CTRL);
}
// --- JetBrains profile ---
void loadJetBrains() {
// File operations
bind("file.save", 'S', MOD_CTRL);
bind("file.saveAs", 'S', MOD_CTRL | MOD_SHIFT);
bind("file.open", 'O', MOD_CTRL);
bind("file.new", 'N', MOD_CTRL | MOD_ALT);
bind("file.close", 'W', MOD_CTRL);
// Edit operations
bind("edit.undo", 'Z', MOD_CTRL);
bind("edit.redo", 'Z', MOD_CTRL | MOD_SHIFT);
bind("edit.cut", 'X', MOD_CTRL);
bind("edit.copy", 'C', MOD_CTRL);
bind("edit.paste", 'V', MOD_CTRL);
bind("edit.selectAll", 'A', MOD_CTRL);
bind("edit.delete", 127, MOD_NONE);
bind("edit.duplicateLine", 'D', MOD_CTRL);
// Search
bind("search.find", 'F', MOD_CTRL);
bind("search.replace", 'R', MOD_CTRL);
bind("search.findNext", 'L', MOD_CTRL);
bind("search.findPrev", 'L', MOD_CTRL | MOD_SHIFT);
bind("search.findInFiles", 'F', MOD_CTRL | MOD_SHIFT);
// Navigation
bind("nav.goToLine", 'G', MOD_CTRL);
bind("nav.goToFile", 'N', MOD_CTRL | MOD_SHIFT);
bind("nav.goToSymbol", 'O', MOD_CTRL | MOD_ALT | MOD_SHIFT);
// View
bind("view.toggleSidebar", '1', MOD_ALT);
bind("view.toggleTerminal", '4', MOD_ALT);
bind("view.zoomIn", '=', MOD_CTRL);
bind("view.zoomOut", '-', MOD_CTRL);
bind("view.commandPalette", 'A', MOD_CTRL | MOD_SHIFT);
// Code
bind("code.comment", '/', MOD_CTRL);
bind("code.format", 'L', MOD_CTRL | MOD_ALT);
bind("code.goToDefinition", 'B', MOD_CTRL);
bind("code.rename", 'R', MOD_SHIFT | MOD_ALT);
// Build
bind("build.run", 'R', MOD_CTRL | MOD_SHIFT);
bind("build.build", 'B', MOD_CTRL | MOD_SHIFT);
}
// --- Emacs profile ---
void loadEmacs() {
// File operations
bind("file.save", 'S', MOD_CTRL);
bind("file.saveAs", 'S', MOD_CTRL | MOD_SHIFT);
bind("file.open", 'O', MOD_CTRL);
bind("file.new", 'N', MOD_CTRL);
bind("file.close", 'W', MOD_CTRL);
// Edit operations
bind("edit.undo", 'Z', MOD_CTRL);
bind("edit.redo", 'Z', MOD_CTRL | MOD_SHIFT);
bind("edit.cut", 'W', MOD_CTRL);
bind("edit.copy", 'W', MOD_ALT);
bind("edit.paste", 'Y', MOD_CTRL);
bind("edit.selectAll", 'A', MOD_CTRL);
bind("edit.delete", 'D', MOD_CTRL);
bind("edit.duplicateLine", 'D', MOD_CTRL | MOD_SHIFT);
// Search
bind("search.find", 'S', MOD_CTRL);
bind("search.replace", 'R', MOD_ALT);
bind("search.findNext", 'S', MOD_CTRL);
bind("search.findPrev", 'R', MOD_CTRL);
bind("search.findInFiles", 'F', MOD_CTRL | MOD_SHIFT);
// Navigation
bind("nav.goToLine", 'G', MOD_ALT);
bind("nav.goToFile", 'F', MOD_CTRL);
bind("nav.goToSymbol", 'O', MOD_CTRL | MOD_SHIFT);
// View
bind("view.toggleSidebar", 'B', MOD_CTRL);
bind("view.toggleTerminal", '`', MOD_CTRL);
bind("view.zoomIn", '=', MOD_CTRL);
bind("view.zoomOut", '-', MOD_CTRL);
bind("view.commandPalette", 'X', MOD_ALT);
// Code
bind("code.comment", ';', MOD_ALT);
bind("code.format", 'F', MOD_CTRL | MOD_ALT);
bind("code.goToDefinition", '.', MOD_ALT);
bind("code.rename", 'R', MOD_CTRL | MOD_SHIFT);
// Build
bind("build.run", 'C', MOD_CTRL | MOD_SHIFT);
bind("build.build", 'B', MOD_CTRL | MOD_SHIFT);
}
KeybindingProfile profile_;
std::map<std::string, KeyCombo> bindings_;
};