ui_components.cpp

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/*
Copyright (C) 2002-2020 UFO: Alien Invasion.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include "ui_internal.h"
#include "ui_components.h"

uiNode_t* UI_GetComponent (const char* name)
{
    unsigned char min = 0;
    unsigned char max = ui_global.numComponents;

    while (min != max) {
        const int mid = (min + max) >> 1;
        const int diff = strcmp(ui_global.components[mid]->name, name);
        assert(mid < max);
        assert(mid >= min);

        if (diff == 0)
            return ui_global.components[mid];

        if (diff > 0)
            max = mid;
        else
            min = mid + 1;
    }

    return nullptr;
}

void UI_InsertComponent(uiNode_t* component)
{
    if (ui_global.numComponents >= UI_MAX_COMPONENTS)
        Com_Error(ERR_FATAL, "UI_InsertComponent: hit MAX_COMPONENTS");

    /* search the insertion position */
    int pos = 0;
    for (; pos < ui_global.numComponents; pos++) {
        const uiNode_t* node = ui_global.components[pos];
        if (strcmp(component->name, node->name) < 0)
            break;
    }

    /* create the space */
    for (int i = ui_global.numComponents - 1; i >= pos; i--)
        ui_global.components[i + 1] = ui_global.components[i];

    /* insert */
    ui_global.components[pos] = component;
    ui_global.numComponents++;
}