source: mainline/uspace/lib/ui/src/msgdialog.c@ 2e08f2b6

/*
 * Copyright (c) 2024 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/** @addtogroup libui
 * @{
 */
/**
 * @file Message dialog
 */

#include <errno.h>
#include <mem.h>
#include <stdlib.h>
#include <ui/fixed.h>
#include <ui/label.h>
#include <ui/msgdialog.h>
#include <ui/pbutton.h>
#include <ui/resource.h>
#include <ui/ui.h>
#include <ui/window.h>
#include "../private/msgdialog.h"

static void ui_msg_dialog_wnd_close(ui_window_t *, void *);
static void ui_msg_dialog_wnd_kbd(ui_window_t *, void *, kbd_event_t *);

ui_window_cb_t ui_msg_dialog_wnd_cb = {
        .close = ui_msg_dialog_wnd_close,
        .kbd = ui_msg_dialog_wnd_kbd
};

static void ui_msg_dialog_btn_clicked(ui_pbutton_t *, void *);

ui_pbutton_cb_t ui_msg_dialog_btn_cb = {
        .clicked = ui_msg_dialog_btn_clicked
};

static const char *ui_msg_dialog_captions[][ui_msg_dialog_maxbtn + 1] = {
        [umdc_ok] = { "OK", NULL },
        [umdc_ok_cancel] = { "OK", "Cancel", NULL }
};

/** Initialize message dialog parameters structure.
 *
 * Message dialog parameters structure must always be initialized using
 * this function first.
 *
 * @param params Message dialog parameters structure
 */
void ui_msg_dialog_params_init(ui_msg_dialog_params_t *params)
{
        memset(params, 0, sizeof(ui_msg_dialog_params_t));
}

/** Create new message dialog.
 *
 * @param ui User interface
 * @param params Message dialog parameters
 * @param rdialog Place to store pointer to new dialog
 * @return EOK on success or an error code
 */
errno_t ui_msg_dialog_create(ui_t *ui, ui_msg_dialog_params_t *params,
    ui_msg_dialog_t **rdialog)
{
        errno_t rc;
        ui_msg_dialog_t *dialog;
        ui_window_t *window = NULL;
        ui_wnd_params_t wparams;
        ui_fixed_t *fixed = NULL;
        ui_label_t *label = NULL;
        ui_pbutton_t *btn[ui_msg_dialog_maxbtn];
        const char **cp;
        unsigned i, nb;
        gfx_rect_t rect;
        gfx_coord_t bw, bpad, btnsw, bp0x;
        ui_resource_t *ui_res;

        for (i = 0; i < ui_msg_dialog_maxbtn; i++)
                btn[i] = NULL;

        dialog = calloc(1, sizeof(ui_msg_dialog_t));
        if (dialog == NULL) {
                rc = ENOMEM;
                goto error;
        }

        ui_wnd_params_init(&wparams);
        wparams.caption = params->caption;
        if ((params->flags & umdf_topmost) != 0)
                wparams.flags |= wndf_topmost;
        if ((params->flags & umdf_center) != 0)
                wparams.placement = ui_wnd_place_center;

        /* FIXME: Auto layout */
        if (ui_is_textmode(ui)) {
                wparams.rect.p0.x = 0;
                wparams.rect.p0.y = 0;
                wparams.rect.p1.x = 60;
                wparams.rect.p1.y = 7;
        } else {
                wparams.rect.p0.x = 0;
                wparams.rect.p0.y = 0;
                wparams.rect.p1.x = 400;
                wparams.rect.p1.y = 110;
        }

        rc = ui_window_create(ui, &wparams, &window);
        if (rc != EOK)
                goto error;

        ui_window_set_cb(window, &ui_msg_dialog_wnd_cb, dialog);

        ui_res = ui_window_get_res(window);

        rc = ui_fixed_create(&fixed);
        if (rc != EOK)
                goto error;

        rc = ui_label_create(ui_res, params->text, &label);
        if (rc != EOK)
                goto error;

        /* FIXME: Auto layout */
        if (ui_is_textmode(ui)) {
                rect.p0.x = 3;
                rect.p0.y = 2;
                rect.p1.x = 57;
                rect.p1.y = 3;
        } else {
                rect.p0.x = 10;
                rect.p0.y = 35;
                rect.p1.x = 390;
                rect.p1.y = 50;
        }

        ui_label_set_rect(label, &rect);
        ui_label_set_halign(label, gfx_halign_center);

        rc = ui_fixed_add(fixed, ui_label_ctl(label));
        if (rc != EOK)
                goto error;

        label = NULL;

        i = 0;
        assert(params->choice == umdc_ok || params->choice == umdc_ok_cancel);
        cp = ui_msg_dialog_captions[params->choice];

        while (*cp != NULL) {
                rc = ui_pbutton_create(ui_res, *cp, &btn[i]);
                if (rc != EOK)
                        goto error;

                ui_pbutton_set_cb(btn[i], &ui_msg_dialog_btn_cb, dialog);
                ++cp;
                ++i;
        }

        nb = i;

        if (ui_is_textmode(ui)) {
                bw = 12;
                bpad = 2;
        } else {
                bw = 90;
                bpad = 10;
        }

        btnsw = (nb - 1) * (bw + bpad) + bw;
        bp0x = (wparams.rect.p0.x + wparams.rect.p1.x - btnsw) / 2;

        for (i = 0; i < nb; i++) {
                /* FIXME: Auto layout */
                if (ui_is_textmode(ui)) {
                        rect.p0.x = bp0x + i * (bw + bpad);
                        rect.p0.y = 4;
                        rect.p1.x = bp0x + bw + i * (bw + bpad);
                        rect.p1.y = 5;
                } else {
                        rect.p0.x = bp0x + i * (bw + bpad);
                        rect.p0.y = 60;
                        rect.p1.x = bp0x + bw + i * (bw + bpad);
                        rect.p1.y = 88;
                }

                ui_pbutton_set_rect(btn[i], &rect);

                rc = ui_fixed_add(fixed, ui_pbutton_ctl(btn[i]));
                if (rc != EOK)
                        goto error;
        }

        ui_pbutton_set_default(btn[0], true);

        for (i = 0; i < ui_msg_dialog_maxbtn; i++) {
                dialog->btn[i] = btn[i];
                btn[i] = NULL;
        }

        ui_window_add(window, ui_fixed_ctl(fixed));
        fixed = NULL;

        rc = ui_window_paint(window);
        if (rc != EOK)
                goto error;

        dialog->window = window;
        *rdialog = dialog;
        return EOK;
error:
        for (i = 0; i < ui_msg_dialog_maxbtn; i++) {
                if (btn[i] != NULL)
                        ui_pbutton_destroy(btn[i]);
        }
        if (label != NULL)
                ui_label_destroy(label);
        if (fixed != NULL)
                ui_fixed_destroy(fixed);
        if (window != NULL)
                ui_window_destroy(window);
        if (dialog != NULL)
                free(dialog);
        return rc;
}

/** Destroy message dialog.
 *
 * @param dialog Message dialog or @c NULL
 */
void ui_msg_dialog_destroy(ui_msg_dialog_t *dialog)
{
        if (dialog == NULL)
                return;

        ui_window_destroy(dialog->window);
        free(dialog);
}

/** Set mesage dialog callback.
 *
 * @param dialog Message dialog
 * @param cb Message dialog callbacks
 * @param arg Callback argument
 */
void ui_msg_dialog_set_cb(ui_msg_dialog_t *dialog, ui_msg_dialog_cb_t *cb,
    void *arg)
{
        dialog->cb = cb;
        dialog->arg = arg;
}

/** Message dialog window close handler.
 *
 * @param window Window
 * @param arg Argument (ui_msg_dialog_t *)
 */
static void ui_msg_dialog_wnd_close(ui_window_t *window, void *arg)
{
        ui_msg_dialog_t *dialog = (ui_msg_dialog_t *) arg;

        if (dialog->cb != NULL && dialog->cb->close != NULL)
                dialog->cb->close(dialog, dialog->arg);
}

/** Message dialog window keyboard event handler.
 *
 * @param window Window
 * @param arg Argument (ui_msg_dialog_t *)
 * @param event Keyboard event
 */
static void ui_msg_dialog_wnd_kbd(ui_window_t *window, void *arg,
    kbd_event_t *event)
{
        ui_msg_dialog_t *dialog = (ui_msg_dialog_t *) arg;
        ui_evclaim_t claim;

        claim = ui_window_def_kbd(window, event);
        if (claim == ui_claimed)
                return;

        if (event->type == KEY_PRESS &&
            (event->mods & (KM_CTRL | KM_SHIFT | KM_ALT)) == 0) {
                if (event->key == KC_ENTER) {
                        /* OK / default button */
                        if (dialog->cb != NULL && dialog->cb->button != NULL) {
                                dialog->cb->button(dialog, dialog->arg, 0);
                                return;
                        }
                } else if (event->key == KC_ESCAPE) {
                        /* Cancel */
                        if (dialog->cb != NULL && dialog->cb->close != NULL) {
                                dialog->cb->close(dialog, dialog->arg);
                                return;
                        }
                }
        }

}

/** Message dialog button click handler.
 *
 * @param pbutton Push button
 * @param arg Argument (ui_msg_dialog_t *)
 */
static void ui_msg_dialog_btn_clicked(ui_pbutton_t *pbutton, void *arg)
{
        ui_msg_dialog_t *dialog = (ui_msg_dialog_t *) arg;
        unsigned i;

        if (dialog->cb != NULL && dialog->cb->button != NULL) {
                for (i = 0; i < ui_msg_dialog_maxbtn; i++) {
                        if (dialog->btn[i] == pbutton)
                                dialog->cb->button(dialog, dialog->arg, i);
                }
        }
}

/** @}
 */