Lazy backlog fetching for removed buffers.
[quassel.git] / src / uisupport / abstractbuffercontainer.cpp
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20
21 #include "abstractbuffercontainer.h"
22 #include "client.h"
23 #include "clientbacklogmanager.h"
24 #include "networkmodel.h"
25
26 AbstractBufferContainer::AbstractBufferContainer(QWidget *parent)
27   : AbstractItemView(parent),
28     _currentBuffer(0)
29 {
30 }
31
32 AbstractBufferContainer::~AbstractBufferContainer() {
33 }
34
35 void AbstractBufferContainer::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) {
36   Q_ASSERT(model());
37   if(!parent.isValid()) {
38     // ok this means that whole networks are about to be removed
39     // we can't determine which buffers are affect, so we hope that all nets are removed
40     // this is the most common case (for example disconnecting from the core or terminating the client)
41     if(model()->rowCount(parent) != end - start + 1)
42       return;
43
44     foreach(BufferId id, _chatViews.keys()) {
45       removeChatView(id);
46     }
47     _chatViews.clear();
48   } else {
49     // check if there are explicitly buffers removed
50     for(int i = start; i <= end; i++) {
51       QVariant variant = parent.child(i,0).data(NetworkModel::BufferIdRole);
52       if(!variant.isValid())
53         continue;
54
55       BufferId bufferId = variant.value<BufferId>();
56       removeBuffer(bufferId);
57     }
58   }
59 }
60
61 void AbstractBufferContainer::removeBuffer(BufferId bufferId) {
62   if(!_chatViews.contains(bufferId))
63     return;
64
65   removeChatView(bufferId);
66   _chatViews.take(bufferId);
67 }
68
69 void AbstractBufferContainer::currentChanged(const QModelIndex &current, const QModelIndex &previous) {
70   BufferId newBufferId = current.data(NetworkModel::BufferIdRole).value<BufferId>();
71   BufferId oldBufferId = previous.data(NetworkModel::BufferIdRole).value<BufferId>();
72   if(newBufferId != oldBufferId) {
73     setCurrentBuffer(newBufferId);
74     emit currentChanged(newBufferId);
75     emit currentChanged(current);
76   }
77 }
78
79 void AbstractBufferContainer::setCurrentBuffer(BufferId bufferId) {
80   BufferId prevBufferId = currentBuffer();
81   if(prevBufferId.isValid() && _chatViews.contains(prevBufferId)) {
82     Client::setBufferLastSeenMsg(prevBufferId, _chatViews[prevBufferId]->lastMsgId());
83   }
84
85   if(!bufferId.isValid()) {
86     _currentBuffer = 0;
87     showChatView(0);
88     return;
89   }
90
91   if(!_chatViews.contains(bufferId))
92     _chatViews[bufferId] = createChatView(bufferId);
93
94   _currentBuffer = bufferId;
95   showChatView(bufferId);
96   Client::networkModel()->clearBufferActivity(bufferId);
97   Client::backlogManager()->checkForBacklog(bufferId);
98   setFocus();
99 }