Aegisub/src/menu.cpp

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// Copyright (c) 2011, Thomas Goyne <plorkyeran@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
/// @file menu.cpp
/// @brief Dynamic menu and toolbar generator.
/// @ingroup menu
#include "include/aegisub/menu.h"
#include "include/aegisub/context.h"
#include "include/aegisub/hotkey.h"
#include "auto4_base.h"
#include "command/command.h"
#include "compat.h"
#include "format.h"
#include "libresrc/libresrc.h"
#include "options.h"
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#include "utils.h"
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#include <libaegisub/cajun/reader.h>
#include <libaegisub/hotkey.h>
#include <libaegisub/json.h>
#include <libaegisub/log.h>
#include <libaegisub/make_unique.h>
#include <libaegisub/path.h>
#include <libaegisub/split.h>
#include <algorithm>
#include <boost/algorithm/string/case_conv.hpp>
#include <boost/range/algorithm_ext/push_back.hpp>
#include <boost/locale/collator.hpp>
#include <vector>
#include <wx/frame.h>
#include <wx/menu.h>
#include <wx/menuitem.h>
#ifdef __WXMAC__
#include <wx/app.h>
#endif
namespace {
/// Window ID of first menu item
static const int MENU_ID_BASE = 10000;
class MruMenu final : public wxMenu {
std::string type;
std::vector<wxMenuItem *> items;
std::vector<std::string> *cmds;
void Resize(size_t new_size) {
for (size_t i = GetMenuItemCount(); i > new_size; --i) {
Remove(FindItemByPosition(i - 1));
}
for (size_t i = GetMenuItemCount(); i < new_size; ++i) {
if (i >= items.size()) {
items.push_back(new wxMenuItem(this, MENU_ID_BASE + cmds->size(), "_"));
cmds->push_back(agi::format("recent/%s/%d", boost::to_lower_copy(type), i));
}
Append(items[i]);
}
}
public:
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MruMenu(std::string type, std::vector<std::string> *cmds)
: type(std::move(type))
, cmds(cmds)
{
}
~MruMenu() {
// Append all items to ensure that they're all cleaned up
Resize(items.size());
}
void Update() {
const auto mru = config::mru->Get(type.c_str());
Resize(mru->size());
if (mru->empty()) {
Resize(1);
items[0]->Enable(false);
items[0]->SetItemLabel(_("Empty"));
return;
}
int i = 0;
for (auto it = mru->begin(); it != mru->end(); ++it, ++i) {
wxString name = it->wstring();
if (!name.StartsWith("?"))
name = it->filename().wstring();
items[i]->SetItemLabel(fmt_wx("%s%d %s",
i <= 9 ? "&" : "", i + 1,
name));
items[i]->Enable(true);
}
}
};
/// @class CommandManager
/// @brief Event dispatcher to update menus on open and handle click events
///
/// Some of what the class does could be dumped off on wx, but wxEVT_MENU_OPEN
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/// is super buggy (GetMenu() often returns nullptr and it outright doesn't trigger
/// on submenus in many cases, and registering large numbers of wxEVT_UPDATE_UI
/// handlers makes everything involves events unusably slow.
class CommandManager {
/// Menu items which need to do something on menu open
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std::vector<std::pair<std::string, wxMenuItem*>> dynamic_items;
/// Menu items which need to be updated only when hotkeys change
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std::vector<std::pair<std::string, wxMenuItem*>> static_items;
/// window id -> command map
std::vector<std::string> items;
/// MRU menus which need to be updated on menu open
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std::vector<MruMenu*> mru;
/// Project context
agi::Context *context;
/// Connection for hotkey change signal
agi::signal::Connection hotkeys_changed;
/// Update a single dynamic menu item
void UpdateItem(std::pair<std::string, wxMenuItem*> const& item) {
cmd::Command *c = cmd::get(item.first);
int flags = c->Type();
if (flags & cmd::COMMAND_VALIDATE) {
item.second->Enable(c->Validate(context));
flags = c->Type();
}
if (flags & cmd::COMMAND_DYNAMIC_NAME)
UpdateItemName(item);
if (flags & cmd::COMMAND_DYNAMIC_HELP)
item.second->SetHelp(c->StrHelp());
if (flags & cmd::COMMAND_RADIO || flags & cmd::COMMAND_TOGGLE) {
bool check = c->IsActive(context);
// Don't call Check(false) on radio items as this causes wxGtk to
// send a menu clicked event, and it should be a no-op anyway
if (check || flags & cmd::COMMAND_TOGGLE)
item.second->Check(check);
}
}
void UpdateItemName(std::pair<std::string, wxMenuItem*> const& item) {
cmd::Command *c = cmd::get(item.first);
wxString text;
if (c->Type() & cmd::COMMAND_DYNAMIC_NAME)
text = c->StrMenu(context);
else
text = item.second->GetItemLabel().BeforeFirst('\t');
item.second->SetItemLabel(text + to_wx("\t" + hotkey::get_hotkey_str_first("Default", c->name())));
}
public:
CommandManager(agi::Context *context)
: context(context)
, hotkeys_changed(hotkey::inst->AddHotkeyChangeListener(&CommandManager::OnHotkeysChanged, this))
{
}
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void SetContext(agi::Context *c) {
context = c;
}
int AddCommand(cmd::Command *co, wxMenu *parent, std::string const& text = "") {
return AddCommand(co, parent, text.empty() ? co->StrMenu(context) : _(to_wx(text)));
}
// because wxString doesn't have a move constructor
int AddCommand(cmd::Command *co, wxMenu *parent, wxString const& menu_text) {
return AddCommand(co, parent, wxString(menu_text));
}
/// Append a command to a menu and register the needed handlers
int AddCommand(cmd::Command *co, wxMenu *parent, wxString&& menu_text) {
int flags = co->Type();
wxItemKind kind =
flags & cmd::COMMAND_RADIO ? wxITEM_RADIO :
flags & cmd::COMMAND_TOGGLE ? wxITEM_CHECK :
wxITEM_NORMAL;
menu_text += to_wx("\t" + hotkey::get_hotkey_str_first("Default", co->name()));
wxMenuItem *item = new wxMenuItem(parent, MENU_ID_BASE + items.size(), menu_text, co->StrHelp(), kind);
#ifndef __WXMAC__
/// @todo Maybe make this a configuration option instead?
if (kind == wxITEM_NORMAL)
item->SetBitmap(co->Icon(16));
#endif
parent->Append(item);
items.push_back(co->name());
if (flags != cmd::COMMAND_NORMAL)
dynamic_items.emplace_back(co->name(), item);
else
static_items.emplace_back(co->name(), item);
return item->GetId();
}
/// Unregister a dynamic menu item
void Remove(wxMenuItem *item) {
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auto pred = [=](std::pair<std::string, wxMenuItem*> const& o) {
return o.second == item;
};
auto it = find_if(dynamic_items.begin(), dynamic_items.end(), pred);
if (it != dynamic_items.end())
dynamic_items.erase(it);
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it = find_if(static_items.begin(), static_items.end(), pred);
if (it != static_items.end())
static_items.erase(it);
}
/// Create a MRU menu and register the needed handlers
/// @param name MRU type
/// @param parent Menu to append the new MRU menu to
void AddRecent(std::string const& name, wxMenu *parent) {
mru.push_back(new MruMenu(name, &items));
parent->AppendSubMenu(mru.back(), _("&Recent"));
}
void OnMenuOpen(wxMenuEvent &) {
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if (!context)
return;
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for (auto const& item : dynamic_items) UpdateItem(item);
for (auto item : mru) item->Update();
}
void OnMenuClick(wxCommandEvent &evt) {
// This also gets clicks on unrelated things such as the toolbar, so
// the window ID ranges really need to be unique
size_t id = static_cast<size_t>(evt.GetId() - MENU_ID_BASE);
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if (id < items.size() && context)
cmd::call(items[id], context);
#ifdef __WXMAC__
else {
switch (evt.GetId()) {
case wxID_ABOUT:
cmd::call("app/about", context);
break;
case wxID_PREFERENCES:
cmd::call("app/options", context);
break;
case wxID_EXIT:
cmd::call("app/exit", context);
break;
default:
break;
}
}
#endif
}
/// Update the hotkeys for all menu items
void OnHotkeysChanged() {
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for (auto const& item : dynamic_items) UpdateItemName(item);
for (auto const& item : static_items) UpdateItemName(item);
}
};
/// Wrapper for wxMenu to add a command manager
struct CommandMenu final : public wxMenu {
CommandManager cm;
CommandMenu(agi::Context *c) : cm(c) { }
};
/// Wrapper for wxMenuBar to add a command manager
struct CommandMenuBar final : public wxMenuBar {
CommandManager cm;
CommandMenuBar(agi::Context *c) : cm(c) { }
};
/// Read a string from a json object
/// @param obj Object to read from
/// @param name Index to read from
/// @param[out] value Output value to write to
/// @return Was the requested index found
bool read_entry(json::Object const& obj, const char *name, std::string *value) {
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auto it = obj.find(name);
if (it == obj.end()) return false;
*value = static_cast<json::String const&>(it->second);
return true;
}
/// Get the root object of the menu configuration
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json::Object const& get_menus_root() {
static json::Object root;
if (!root.empty()) return root;
try {
root = std::move(static_cast<json::Object&>(agi::json_util::file(config::path->Decode("?user/menu.json"), GET_DEFAULT_CONFIG(default_menu))));
return root;
}
catch (json::Reader::ParseException const& e) {
LOG_E("menu/parse") << "json::ParseException: " << e.what() << ", Line/offset: " << e.m_locTokenBegin.m_nLine + 1 << '/' << e.m_locTokenBegin.m_nLineOffset + 1;
throw;
}
catch (std::exception const& e) {
LOG_E("menu/parse") << e.what();
throw;
}
}
/// Get the menu with the specified name
/// @param name Name of menu to get
/// @return Array of menu items
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json::Array const& get_menu(std::string const& name) {
auto const& root = get_menus_root();
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auto it = root.find(name);
if (it == root.end()) throw menu::UnknownMenu("Menu named " + name + " not found");
return it->second;
}
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wxMenu *build_menu(std::string const& name, agi::Context *c, CommandManager *cm, wxMenu *menu = nullptr);
/// Recursively process a single entry in the menu json
/// @param parent Menu to add the item(s) from this entry to
/// @param c Project context to bind the menu to
/// @param ele json object to process
/// @param cm Command manager for this menu
void process_menu_item(wxMenu *parent, agi::Context *c, json::Object const& ele, CommandManager *cm) {
if (ele.empty()) {
parent->AppendSeparator();
return;
}
std::string submenu, recent, command, text, special;
read_entry(ele, "special", &special);
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#ifdef __WXMAC__
if (special == "window")
osx::make_windows_menu(parent);
#endif
if (read_entry(ele, "submenu", &submenu) && read_entry(ele, "text", &text)) {
wxString tl_text = _(to_wx(text));
parent->AppendSubMenu(build_menu(submenu, c, cm), tl_text);
#ifdef __WXMAC__
if (special == "help")
wxApp::s_macHelpMenuTitleName = tl_text;
#endif
return;
}
if (read_entry(ele, "recent", &recent)) {
cm->AddRecent(recent, parent);
return;
}
if (!read_entry(ele, "command", &command))
return;
read_entry(ele, "text", &text);
try {
int id = cm->AddCommand(cmd::get(command), parent, text);
#ifdef __WXMAC__
if (!special.empty()) {
if (special == "about")
wxApp::s_macAboutMenuItemId = id;
else if (special == "exit")
wxApp::s_macExitMenuItemId = id;
else if (special == "options")
wxApp::s_macPreferencesMenuItemId = id;
}
#else
(void)id;
#endif
}
catch (agi::Exception const& e) {
#ifdef _DEBUG
parent->Append(-1, to_wx(e.GetMessage()))->Enable(false);
#endif
LOG_W("menu/command/not_found") << "Skipping command " << command << ": " << e.GetMessage();
}
}
/// Build the menu with the given name
/// @param name Name of the menu
/// @param c Project context to bind the menu to
wxMenu *build_menu(std::string const& name, agi::Context *c, CommandManager *cm, wxMenu *menu) {
if (!menu) menu = new wxMenu;
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for (auto const& item : get_menu(name))
process_menu_item(menu, c, item, cm);
return menu;
}
class AutomationMenu final : public wxMenu {
agi::Context *c;
CommandManager *cm;
agi::signal::Connection global_slot;
agi::signal::Connection local_slot;
std::vector<wxMenuItem *> all_items;
struct WorkItem {
std::string displayname;
cmd::Command *command;
std::vector<WorkItem> subitems;
WorkItem(std::string const &displayname, cmd::Command *command = nullptr)
: displayname(displayname), command(command) { }
WorkItem *FindOrMakeSubitem(std::string const &name) {
auto sub = std::find_if(subitems.begin(), subitems.end(), [&](WorkItem const &item) { return item.displayname == name; });
if (sub != subitems.end()) return &*sub;
subitems.emplace_back(name);
return &subitems.back();
}
void Sort() {
if (command) return;
for (auto &sub : subitems)
sub.Sort();
auto comp = boost::locale::comparator<std::string::value_type>();
std::sort(subitems.begin(), subitems.end(), [&](WorkItem const &a, WorkItem const &b){
return comp(a.displayname, b.displayname);
});
}
void GenerateMenu(wxMenu *parent, AutomationMenu *am) {
for (auto item : subitems) {
if (item.command) {
am->cm->AddCommand(item.command, parent, item.displayname);
am->all_items.push_back(parent->GetMenuItems().back());
}
else {
auto submenu = new wxMenu;
parent->AppendSubMenu(submenu, to_wx(item.displayname));
item.GenerateMenu(submenu, am);
}
}
}
};
void Regenerate() {
for (auto item : all_items)
cm->Remove(item);
wxMenuItemList &items = GetMenuItems();
// Remove everything but automation manager and the separator
for (size_t i = items.size() - 1; i >= 2; --i)
Delete(items[i]);
auto macros = config::global_scripts->GetMacros();
boost::push_back(macros, c->local_scripts->GetMacros());
if (macros.empty()) {
Append(-1, _("No Automation macros loaded"))->Enable(false);
return;
}
WorkItem top("");
for (auto macro : macros) {
const auto name = from_wx(macro->StrMenu(c));
WorkItem *parent = &top;
for (auto section : agi::Split(name, wxS('/'))) {
std::string sectionname(section.begin(), section.end());
if (section.end() == name.end()) {
parent->subitems.emplace_back(sectionname, macro);
}
else {
parent = parent->FindOrMakeSubitem(sectionname);
}
}
}
top.Sort();
top.GenerateMenu(this, this);
}
public:
AutomationMenu(agi::Context *c, CommandManager *cm)
: c(c)
, cm(cm)
, global_slot(config::global_scripts->AddScriptChangeListener(&AutomationMenu::Regenerate, this))
, local_slot(c->local_scripts->AddScriptChangeListener(&AutomationMenu::Regenerate, this))
{
cm->AddCommand(cmd::get("am/meta"), this);
AppendSeparator();
Regenerate();
}
};
}
namespace menu {
void GetMenuBar(std::string const& name, wxFrame *window, agi::Context *c) {
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#ifdef __WXMAC__
auto bind_events = [&](CommandMenuBar *menu) {
window->Bind(wxEVT_ACTIVATE, [=](wxActivateEvent&) { menu->cm.SetContext(c); });
window->Bind(wxEVT_DESTROY, [=](wxWindowDestroyEvent&) {
if (!osx::activate_top_window_other_than(window))
menu->cm.SetContext(nullptr);
});
};
if (wxMenuBar *menu = wxMenuBar::MacGetCommonMenuBar()) {
bind_events(static_cast<CommandMenuBar *>(menu));
return;
}
#endif
auto menu = agi::make_unique<CommandMenuBar>(c);
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for (auto const& item : get_menu(name)) {
std::string submenu, disp;
read_entry(item, "submenu", &submenu);
read_entry(item, "text", &disp);
if (!submenu.empty()) {
menu->Append(build_menu(submenu, c, &menu->cm), _(to_wx(disp)));
}
else {
read_entry(item, "special", &submenu);
if (submenu == "automation")
menu->Append(new AutomationMenu(c, &menu->cm), _(to_wx(disp)));
}
}
#ifdef __WXMAC__
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menu->Bind(wxEVT_MENU_OPEN, &CommandManager::OnMenuOpen, &menu->cm);
menu->Bind(wxEVT_MENU, &CommandManager::OnMenuClick, &menu->cm);
#else
window->Bind(wxEVT_MENU_OPEN, &CommandManager::OnMenuOpen, &menu->cm);
window->Bind(wxEVT_MENU, &CommandManager::OnMenuClick, &menu->cm);
#endif
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#ifdef __WXMAC__
bind_events(menu.get());
wxMenuBar::MacSetCommonMenuBar(menu.get());
#else
window->SetMenuBar(menu.get());
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#endif
menu.release();
}
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std::unique_ptr<wxMenu> GetMenu(std::string const& name, agi::Context *c) {
auto menu = agi::make_unique<CommandMenu>(c);
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build_menu(name, c, &menu->cm, menu.get());
menu->Bind(wxEVT_MENU_OPEN, &CommandManager::OnMenuOpen, &menu->cm);
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menu->Bind(wxEVT_MENU, &CommandManager::OnMenuClick, &menu->cm);
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return std::unique_ptr<wxMenu>(menu.release());
}
void OpenPopupMenu(wxMenu *menu, wxWindow *parent_window) {
wxMenuEvent evt;
evt.SetEventType(wxEVT_MENU_OPEN);
menu->ProcessEvent(evt);
parent_window->PopupMenu(menu);
}
}