lnav/src/bottom_status_source.hh

/**
 * Copyright (c) 2007-2012, Timothy Stack
 *
 * 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.
 * * Neither the name of Timothy Stack nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 */

#ifndef _bottom_status_source_hh
#define _bottom_status_source_hh

#include <string>

#include "grep_proc.hh"
#include "textview_curses.hh"
#include "logfile_sub_source.hh"
#include "statusview_curses.hh"

class bottom_status_source
    : public status_data_source,
      public grep_proc_control {
public:

    typedef listview_curses::action::mem_functor_t<
            bottom_status_source> lv_functor_t;

    typedef enum {
        BSF_LINE_NUMBER,
        BSF_PERCENT,
        BSF_HITS,
        BSF_SEARCH_TERM,
        BSF_LOADING,
        BSF_HELP,

        BSF__MAX
    } field_t;

    bottom_status_source();

    virtual ~bottom_status_source() { };

    lv_functor_t line_number_wire;
    lv_functor_t percent_wire;
    lv_functor_t marks_wire;

    status_field &get_field(field_t id) { return this->bss_fields[id]; };

    void set_prompt(const std::string &prompt)
    {
        this->bss_prompt.set_value(prompt);
    };

    void grep_error(std::string msg)
    {
        this->bss_error.set_value(msg);
    };

    size_t statusview_fields()
    {
        size_t retval;

        if (this->bss_prompt.empty() && this->bss_error.empty()) {
            retval = BSF__MAX;
        }
        else{
            retval = 1;
        }

        return retval;
    };

    status_field &statusview_value_for_field(int field)
    {
        if (!this->bss_error.empty()) {
            return this->bss_error;
        }
        else if (!this->bss_prompt.empty()) {
            return this->bss_prompt;
        }
        else {
            return this->get_field((field_t)field);
        }
    };

    void update_line_number(listview_curses *lc);

    void update_search_term(textview_curses &tc);

    void update_percent(listview_curses *lc);

    void update_marks(listview_curses *lc);

    void update_hits(textview_curses *tc);

    void update_loading(off_t off, size_t total);

private:
    status_field bss_prompt;
    status_field bss_error;
    status_field bss_fields[BSF__MAX];
    int          bss_hit_spinner{0};
    int          bss_load_percent{0};
    bool         bss_paused{false};
};

#endif