1 /** 2 * Copyright (c) 2015, Timothy Stack 3 * 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * * Redistributions of source code must retain the above copyright notice, this 10 * list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * * Neither the name of Timothy Stack nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 25 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef LNAV_FIELD_OVERLAY_SOURCE_H 31 #define LNAV_FIELD_OVERLAY_SOURCE_H 32 33 #include <utility> 34 #include <vector> 35 36 #include "listview_curses.hh" 37 #include "log_data_helper.hh" 38 #include "logfile_sub_source.hh" 39 #include "textfile_sub_source.hh" 40 41 class field_overlay_source : public list_overlay_source { 42 public: field_overlay_source(logfile_sub_source & lss,textfile_sub_source & tss)43 explicit field_overlay_source(logfile_sub_source &lss, textfile_sub_source &tss) 44 : fos_lss(lss), fos_tss(tss), fos_log_helper(lss) { 45 46 }; 47 add_key_line_attrs(int key_size,bool last_line=false)48 void add_key_line_attrs(int key_size, bool last_line = false) { 49 string_attrs_t &sa = this->fos_lines.back().get_attrs(); 50 struct line_range lr(1, 2); 51 sa.emplace_back(lr, &view_curses::VC_GRAPHIC, last_line ? ACS_LLCORNER : ACS_LTEE); 52 53 lr.lr_start = 3 + key_size + 3; 54 lr.lr_end = -1; 55 sa.emplace_back(lr, &view_curses::VC_STYLE, A_BOLD); 56 }; 57 list_value_for_overlay(const listview_curses & lv,int y,int bottom,vis_line_t row,attr_line_t & value_out)58 bool list_value_for_overlay(const listview_curses &lv, 59 int y, int bottom, 60 vis_line_t row, 61 attr_line_t &value_out) override { 62 if (y == 0) { 63 this->build_field_lines(lv); 64 this->build_summary_lines(lv); 65 return false; 66 } 67 68 if (1 <= y && y <= (int)this->fos_lines.size()) { 69 value_out = this->fos_lines[y - 1]; 70 return true; 71 } 72 73 if (!this->fos_summary_lines.empty() && y == (bottom - 1)) { 74 value_out = this->fos_summary_lines[0]; 75 return true; 76 } 77 78 if (!this->fos_meta_lines.empty()) { 79 value_out = this->fos_meta_lines.front(); 80 this->fos_meta_lines.erase(this->fos_meta_lines.begin()); 81 82 return true; 83 } 84 85 if (row < lv.get_inner_height()) { 86 this->build_meta_line(lv, this->fos_meta_lines, row); 87 } 88 89 return false; 90 }; 91 92 void build_field_lines(const listview_curses &lv); 93 void build_summary_lines(const listview_curses &lv); 94 void build_meta_line(const listview_curses &lv, 95 std::vector<attr_line_t> &dst, 96 vis_line_t row); 97 98 struct context { contextfield_overlay_source::context99 context(std::string prefix, bool show, bool show_discovered) 100 : c_prefix(std::move(prefix)), c_show(show), 101 c_show_discovered(show_discovered) 102 {} 103 104 std::string c_prefix; 105 bool c_show{false}; 106 bool c_show_discovered{true}; 107 }; 108 109 bool fos_show_status{true}; 110 std::stack<context> fos_contexts; 111 logfile_sub_source &fos_lss; 112 textfile_sub_source &fos_tss; 113 log_data_helper fos_log_helper; 114 int fos_known_key_size{0}; 115 int fos_unknown_key_size{0}; 116 std::vector<attr_line_t> fos_lines; 117 std::vector<attr_line_t> fos_summary_lines; 118 std::vector<attr_line_t> fos_meta_lines; 119 }; 120 121 #endif //LNAV_FIELD_OVERLAY_SOURCE_H 122