/usr/lib/Wt/examples/codeview/CodeSession.C is in witty-examples 3.1.10-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | /*
* Copyright (C) 2010 Emweb bvba, Heverlee, Belgium.
*
* See the LICENSE file for terms of use.
*/
#include <Wt/WApplication>
#include <Wt/WServer>
#include <Wt/WRandom>
#include "CodeSession.h"
boost::recursive_mutex CodeSession::mutex_;
std::vector<CodeSession *> CodeSession::sessions_;
CodeSession::CodeSession(const CoderCallback& coderCallback)
{
generateId();
coder_ = new Coder();
coder_->sessionId = Wt::WApplication::instance()->sessionId();
coder_->callback = coderCallback;
Lock lock(mutex_);
sessions_.push_back(this);
}
CodeSession::~CodeSession()
{
delete coder_;
}
CodeSession * CodeSession::addObserver(const std::string& id,
const BufferCallback& bufferCallback)
{
Lock lock(mutex_);
for (unsigned i = 0; i < sessions_.size(); ++i) {
CodeSession *session = sessions_[i];
if (session->id() == id) {
Observer observer;
observer.sessionId = Wt::WApplication::instance()->sessionId();
observer.callback = bufferCallback;
session->observers_.push_back(observer);
session->postSessionChanged();
return session;
}
}
return 0;
}
void CodeSession::removeObserver()
{
Lock lock(mutex_);
std::string sessionId = Wt::WApplication::instance()->sessionId();
for (unsigned i = 0; i < observers_.size(); ++i) {
if (observers_[i].sessionId == sessionId) {
observers_.erase(observers_.begin() + i);
postSessionChanged();
deleteIfEmpty();
return;
}
}
}
void CodeSession::removeCoder()
{
Lock lock(mutex_);
delete coder_;
coder_ = 0;
deleteIfEmpty();
}
void CodeSession::insertBuffer(int index)
{
Lock lock(mutex_);
buffers_.insert(buffers_.begin() + index, Buffer());
postBufferChanged(index, Inserted);
}
void CodeSession::updateBuffer(int buffer, const Wt::WString& name,
const Wt::WString& text)
{
Lock lock(mutex_);
buffers_[buffer].name = name;
buffers_[buffer].text = text;
postBufferChanged(buffer, Changed);
}
std::vector<CodeSession::Buffer> CodeSession::buffers() const
{
Lock lock(mutex_);
return buffers_;
}
CodeSession::Buffer CodeSession::buffer(int buffer) const
{
Lock lock(mutex_);
return buffers_[buffer];
}
void CodeSession::deleteIfEmpty()
{
if (observers_.size() == 0 && !coder_) {
sessions_.erase(std::find(sessions_.begin(), sessions_.end(), this));
delete this;
}
}
void CodeSession::generateId()
{
id_ = Wt::WRandom::generateId(32);
}
void CodeSession::postSessionChanged()
{
if (coder_)
Wt::WServer::instance()->post(coder_->sessionId, coder_->callback);
}
void CodeSession::postBufferChanged(int buffer, BufferUpdate update)
{
for (unsigned i = 0; i < observers_.size(); ++i) {
Observer& observer = observers_[i];
Wt::WServer::instance()
->post(observer.sessionId,
boost::bind(observer.callback, buffer, update));
}
}
|