a943e08dc7
- use set_option to set an option, instead of operator[] (no-const) - keeps a list of OptionManagerWatcher to notify when an option change it also notifies when an option changes in his parent and the option is not overridden.
100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
#include "option_manager.hh"
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#include "assert.hh"
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#include <sstream>
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namespace Kakoune
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{
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OptionManager::OptionManager(OptionManager& parent)
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: m_parent(&parent)
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{
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parent.register_watcher(*this);
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}
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OptionManager::~OptionManager()
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{
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if (m_parent)
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m_parent->unregister_watcher(*this);
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assert(m_watchers.empty());
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}
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void OptionManager::register_watcher(OptionManagerWatcher& watcher)
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{
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assert(not contains(m_watchers, &watcher));
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m_watchers.push_back(&watcher);
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}
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void OptionManager::unregister_watcher(OptionManagerWatcher& watcher)
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{
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auto it = find(m_watchers.begin(), m_watchers.end(), &watcher);
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assert(it != m_watchers.end());
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m_watchers.erase(it);
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}
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void OptionManager::set_option(const String& name, const Option& value)
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{
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Option old_value = m_options[name];
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m_options[name] = value;
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if (old_value != value)
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{
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for (auto watcher : m_watchers)
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watcher->on_option_changed(name, value);
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}
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}
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const Option& OptionManager::operator[](const String& name) const
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{
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auto it = m_options.find(name);
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if (it != m_options.end())
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return it->second;
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else if (m_parent)
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return (*m_parent)[name];
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else
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throw option_not_found(name);
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}
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CandidateList OptionManager::complete_option_name(const String& prefix,
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size_t cursor_pos)
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{
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String real_prefix = prefix.substr(0, cursor_pos);
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CandidateList result;
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if (m_parent)
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result = m_parent->complete_option_name(prefix, cursor_pos);
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for (auto& option : m_options)
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{
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if (option.first.substr(0, real_prefix.length()) == real_prefix and
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not contains(result, option.first))
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result.push_back(option.first);
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}
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return result;
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}
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OptionManager::OptionMap OptionManager::flatten_options() const
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{
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OptionMap res = m_parent ? m_parent->flatten_options() : OptionMap();
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for (auto& option : m_options)
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res.insert(option);
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return res;
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}
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void OptionManager::on_option_changed(const String& name, const Option& value)
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{
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// if parent option changed, but we overrided it, it's like nothing happened
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if (m_options.find(name) != m_options.end())
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return;
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for (auto watcher : m_watchers)
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watcher->on_option_changed(name, value);
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}
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GlobalOptionManager::GlobalOptionManager()
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: OptionManager()
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{
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set_option("tabstop", Option(8));
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}
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}
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