ui/qt/model.cpp

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2014 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "model.h"

UiListSelection* listSelection(QItemSelectionModel *s) {
    UiListSelection *selection = new UiListSelection();
    
    QModelIndexList list = s->selectedRows();
    selection->count = list.count();
    if(selection->count > 0) {
        selection->rows = new int[selection->count];
    }
    
    QModelIndex index;
    int i=0;
    foreach(index, list) {
        selection->rows[i] = index.row();
        i++;
    }
    return selection;
}

ListModel::ListModel(UiObject* obj, QListView* view, UiListPtr* list, ui_model_getvalue_f getvalue, ui_callback f, void* userdata) {
    this->obj = obj;
    this->view = view;
    this->list = list;
    this->getvalue = getvalue;
    this->callback = f;
    this->userdata = userdata;
}

int ListModel::rowCount(const QModelIndex& parent) const {
    return list->list->count(list->list);
}

QVariant ListModel::data(const QModelIndex &index, int role) const {
    if(role == Qt::DisplayRole) {
        UiList *ls = list->list;
        void *rowData = ls->get(ls, index.row());
        if(rowData && getvalue) {
            void *value = getvalue(rowData, 0);
            return QString::fromUtf8((char*)value); 
        }
    }
    return QVariant();
}

void ListModel::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected) {
    UiListSelection *selection = listSelection(view->selectionModel());
    
    UiEvent e;
    e.obj = obj;
    e.window = obj->window;
    e.document = obj->ctx->document;
    e.eventdata = selection;
    e.intval = selection->count > 0 ? selection->rows[0] : -1;
    callback(&e, userdata);
    
    if(selection->count > 0) {
        delete selection->rows;
    }
    delete selection;
}

TableModel::TableModel(UiObject *obj, QTreeView *view, UiListPtr *list, UiModelInfo *info) {
    this->obj = obj;
    this->list = list;
    this->info = info;
    this->view = view;
}

int TableModel::rowCount(const QModelIndex &parent) const {
    return list->list->count(list->list);
}

int TableModel::columnCount(const QModelIndex &parent) const {
    return info->columns;
}

QVariant TableModel::data(const QModelIndex &index, int role) const {
    if(role == Qt::DisplayRole) {
        UiList *ls = list->list;
        void *rowData = ls->get(ls, index.row());
        if(rowData && info->getvalue) {
            void *value = info->getvalue(rowData, index.column());
            switch(info->types[index.column()]) {
                case UI_STRING: {
                    return QString::fromUtf8((char*)value); 
                }
                case UI_INTEGER: {
                    int *intptr = (int*)value;
                    return QVariant(*intptr);
                }
            }
        }
    }
    return QVariant();
}

QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const {
    if(role == Qt::DisplayRole) {
        char *label = info->titles[section];
        return QString::fromUtf8(label);
    }
    return QVariant();
}

void TableModel::update() {
    emit dataChanged(QModelIndex(),QModelIndex());
}

void TableModel::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected) {
    UiListSelection *selection = listSelection(view->selectionModel());
    
    UiEvent e;
    e.obj = obj;
    e.window = obj->window;
    e.document = obj->ctx->document;
    e.eventdata = selection;
    e.intval = selection->count > 0 ? selection->rows[0] : -1;
    info->selection(&e, info->userdata);
    
    if(selection->count > 0) {
        delete selection->rows;
    }
    delete selection;
}

void TableModel::activate(const QModelIndex &) {
    UiListSelection *selection = listSelection(view->selectionModel());
    
    UiEvent e;
    e.obj = obj;
    e.window = obj->window;
    e.document = obj->ctx->document;
    e.eventdata = selection;
    e.intval = selection->count > 0 ? selection->rows[0] : -1;
    info->activate(&e, info->userdata);
    
    if(selection->count > 0) {
        delete selection->rows;
    }
    delete selection;
}