1 | /**********************************************************************
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2 | *
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3 | * pagedbrowserclass.cpp --
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4 | * Copyright (C) 1999 The New Zealand Digital Library Project
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5 | *
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6 | * A component of the Greenstone digital library software
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7 | * from the New Zealand Digital Library Project at the
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8 | * University of Waikato, New Zealand.
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9 | *
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10 | * This program is free software; you can redistribute it and/or modify
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11 | * it under the terms of the GNU General Public License as published by
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12 | * the Free Software Foundation; either version 2 of the License, or
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13 | * (at your option) any later version.
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14 | *
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15 | * This program is distributed in the hope that it will be useful,
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | * GNU General Public License for more details.
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19 | *
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20 | * You should have received a copy of the GNU General Public License
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21 | * along with this program; if not, write to the Free Software
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22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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23 | *
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24 | *********************************************************************/
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25 |
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26 | #include "gsdl_modules_cfg.h"
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27 | #ifdef GSDL_USE_PAGED_BROWSER
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28 |
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29 | #include "pagedbrowserclass.h"
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30 | #include <assert.h>
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31 | #include "recptprototools.h"
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32 | #include "OIDtools.h"
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33 | #include "gsdltools.h"
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34 |
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35 | pagedbrowserclass::pagedbrowserclass () {
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36 | }
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37 |
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38 | pagedbrowserclass::~pagedbrowserclass () {
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39 | }
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40 |
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41 | // returns the name that specifies the browserclass type
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42 | text_t pagedbrowserclass::get_browser_name () {
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43 | return "Paged";
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44 | }
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45 |
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46 | browserclass* pagedbrowserclass::clone()
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47 | {
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48 | return new pagedbrowserclass();
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49 | }
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50 |
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51 | void pagedbrowserclass::load_metadata_defaults (text_tset &metadata) {
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52 | metadata.insert ("Title");
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53 | }
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54 |
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55 | // if the "gp" (go to page) argument is set we need to set
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56 | // the "d" argument to the corresponding page
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57 | // also want to set "d" argument to first child if we're at
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58 | // an 'Invisible' top level
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59 | void pagedbrowserclass::processOID (cgiargsclass &args, recptproto *collectproto,
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60 | ostream &logout) {
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61 |
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62 | text_t &arg_d = args["d"];
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63 | text_t &arg_gp = args["gp"];
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64 | text_tset metadata;
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65 | bool getParents = false;
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66 | FilterResponse_t response;
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67 |
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68 | if (!arg_d.empty() && !arg_gp.empty()) {
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69 | text_t immediate_parent = get_parent (arg_d);
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70 |
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71 | metadata.insert("Title");
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72 | get_children (immediate_parent, args["c"], args["l"], metadata,
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73 | getParents, collectproto, response, logout);
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74 | ResultDocInfo_tarray::iterator dochere = response.docInfo.begin();
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75 | ResultDocInfo_tarray::iterator docend = response.docInfo.end();
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76 | while (dochere != docend) {
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77 | if ((*dochere).metadata["Title"].values[0] == arg_gp) {
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78 | arg_d = (*dochere).OID;
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79 | return;
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80 | }
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81 | ++dochere;
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82 | }
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83 | }
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84 |
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85 | // The "gp" argument was either empty or invalid, so display the first child if given a document OID
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86 | if (!arg_d.empty() && is_top(arg_d)) { // if top level doc, check if not invisible
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87 | metadata.insert("thistype");
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88 | if (get_info(arg_d, args["c"], args["l"], metadata, getParents, collectproto, response, logout)) {
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89 | text_t type = response.docInfo[0].metadata["thistype"].values[0];
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90 | if (type=="Invisible") { // display first child
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91 | arg_d = arg_d + ".fc";
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92 | }
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93 | }
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94 | }
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95 | }
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96 |
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97 | int pagedbrowserclass::output_section_group (ResultDocInfo_t §ion, cgiargsclass &args,
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98 | const text_t &/*collection*/, int /*colnumber*/,
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99 | format_t * /*formatlistptr*/, bool /*use_table*/,
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100 | text_tset &/*metadata*/, bool &/*getParents*/,
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101 | recptproto * /*collectproto*/, displayclass &disp,
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102 | outconvertclass &outconvert, ostream &textout,
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103 | ostream &/*logout*/) {
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104 |
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105 | // this browser class only handles document levels
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106 | if (args["d"].empty()) return 0;
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107 |
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108 | if (section.OID != args["d"]) {
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109 | text_t httpprevarrow = "_httpdocument_&cl=" + args["cl"] + "&d=" + dm_safe(section.OID);
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110 | text_t parentarrow = "<a href=\"" + httpprevarrow + "\">_iconprev_</a>\n";
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111 | disp.setmacro ("httpprevarrow", "document", httpprevarrow);
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112 | disp.setmacro ("parentarrow", "document", parentarrow);
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113 | return 0;
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114 | }
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115 |
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116 | // must be at top level to get to here!
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117 | textout << outconvert << disp << "<b>" << section.metadata["Title"].values[0]
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118 | << "_document:textintro_</b>\n";
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119 |
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120 | return 0;
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121 | }
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122 |
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123 | int pagedbrowserclass::output_section_group (FilterResponse_t §ions, cgiargsclass &args,
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124 | const text_t &/*collection*/, int /*colnumber*/,
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125 | format_t * /*formatlistptr*/, bool /*use_table*/,
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126 | text_tset &/*metadata*/, bool &/*getParents*/,
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127 | recptproto * /*collectproto*/, displayclass &disp,
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128 | outconvertclass &outconvert, ostream &textout,
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129 | ostream &/*logout*/) {
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130 |
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131 | text_t &arg_d = args["d"];
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132 |
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133 | // this browser class only handles document levels
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134 | if (arg_d.empty()) return 0;
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135 |
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136 | text_t previousOID, previoustitle, nextOID, nexttitle;
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137 | text_t prevarrow, nextarrow, httpprevarrow, httpnextarrow;
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138 | bool found = false;
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139 |
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140 | // this should be our list of pages
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141 |
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142 | ResultDocInfo_tarray::iterator thissection = sections.docInfo.begin();
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143 | ResultDocInfo_tarray::iterator endsection = sections.docInfo.end();
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144 |
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145 | while (thissection != endsection) {
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146 | if (arg_d == (*thissection).OID) {
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147 | found = true;
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148 | textout << outconvert << disp
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149 | << "<table><tr valign=top><td colspan=3><center><b>_page_"
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150 | << (*thissection).metadata["Title"].values[0] << "</b>\n";
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151 | if (thissection != sections.docInfo.begin()) {
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152 | previousOID = (*(thissection-1)).OID;
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153 | previoustitle = (*(thissection-1)).metadata["Title"].values[0];
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154 | } else {
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155 | prevarrow = "_document:parentarrow_";
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156 | }
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157 |
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158 | if ((thissection+1) != endsection) {
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159 | nextOID = (*(thissection+1)).OID;
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160 | nexttitle = (*(thissection+1)).metadata["Title"].values[0];
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161 | }
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162 | break;
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163 | }
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164 | ++thissection;
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165 | }
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166 |
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167 | if (!found) {
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168 | textout << outconvert << disp
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169 | << "<table><tr valign=top> <td colspan=3><center>\n";
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170 | }
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171 | int numpages = sections.docInfo.size();
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172 | textout << outconvert << disp
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173 | << ("_document:textnumpages_(" + text_t(numpages) + ")</center></td></tr>\n");
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174 |
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175 | disp.setmacro ("numpages", "document", numpages);
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176 |
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177 | if (!found) {
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178 | httpnextarrow = "_httpdocument_&cl=" + args["cl"] + "&d=" + sections.docInfo[0].OID;
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179 | nextarrow = "<a href=\"" + httpnextarrow + "\">" +
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180 | sections.docInfo[0].metadata["Title"].values[0] + "_iconnext_</a>\n";
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181 |
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182 | } else {
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183 | if (!previousOID.empty()) {
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184 | httpprevarrow = "_httpdocument_&cl=" + args["cl"] + "&d=" + dm_safe(previousOID);
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185 | prevarrow = "<a href=\"" + httpprevarrow + "\">_iconprev_" + previoustitle + "</a>\n";
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186 | }
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187 | if (!nextOID.empty()) {
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188 | httpnextarrow = "_httpdocument_&cl=" + args["cl"] + "&d=" + dm_safe(nextOID);
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189 | nextarrow = "<a href=\"" + httpnextarrow + "\">" + nexttitle + "_iconnext_</a>\n";
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190 | }
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191 | }
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192 |
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193 | if (!httpprevarrow.empty()) disp.setmacro ("httpprevarrow", "document", httpprevarrow);
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194 | if (!httpnextarrow.empty()) disp.setmacro ("httpnextarrow", "document", httpnextarrow);
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195 |
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196 | if (!prevarrow.empty()) disp.setmacro ("prevarrow", "document", prevarrow);
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197 | if (!nextarrow.empty()) disp.setmacro ("nextarrow", "document", nextarrow);
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198 |
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199 | if (!previoustitle.empty()) disp.setmacro ("prevtitle", "document", previoustitle);
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200 | if (!nexttitle.empty()) disp.setmacro ("nexttitle", "document", nexttitle);
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201 |
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202 |
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203 | textout << outconvert << disp << "<tr valign=middle>\n"
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204 | << "<td align=right>" << prevarrow << "</td>\n"
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205 | << "<td align=center valign=top>_document:gotoform_</td>"
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206 | << "<td align=left>" << nextarrow << "</td>\n"
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207 | << "</tr></table>\n";
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208 |
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209 | return 0;
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210 | }
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211 |
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212 | #endif //GSDL_USE_PAGED_BROWSER
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