std/quickadd.js

   1 /*
   2     Pitchfork Music Player Daemon Client
   3     Copyright (C) 2007  Roger Bystrøm
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; version 2 of the License.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License along
  15     with this program; if not, write to the Free Software Foundation, Inc.,
  16     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17 */
  18
  19 var quickadd_last_term = "";
  20
  21 function quickadd_focus(e) {
  22         var qa = document.getElementById('quickadd');
  23         var qa_disp = document.getElementById('qa_suggestions');
  24         if(e&&e.type&&e.type!="focus");
  25                 qa.focus();
  26         if(qa.value==qa.defaultValue) {
  27                 qa.value = "";
  28         }
  29         qa_disp.style.display = "block";
  30 }
  31 function quickadd_blur(e) {
  32         var qa = document.getElementById('quickadd');
  33         var qa_disp = document.getElementById('qa_suggestions');
  34
  35         if(qa.value.trim().length==0) {
  36                 qa.value=qa.defaultValue;
  37                 quickadd_hide();
  38         }
  39 }
  40 function quickadd_keydown_handler(e) {
  41         e.stopPropagation();
  42         var qa = document.getElementById('quickadd');
  43         var key = e.keyCode;
  44
  45         /* return key, send request to add if something to add */
  46         if(key==RETURN_KEY_CODE) {
  47                 stop_event(e);
  48                 var add = qa.value;
  49                 add = add.trim();
  50                 if(add.length>0) {
  51                         var txt_node = document.getElementById('qa_suggestions_txt');
  52                         var elems = txt_node.getElementsByTagName("span");
  53                         var i = qa_get_selected_id(elems);
  54                         if(i>=0) {
  55                                 add = elems[i].name;
  56                         }
  57                         quickadd_clean();
  58                         send_command("add=" + encodeURIComponent(add), function(response)
  59                                         { if(response=="failed") show_status_bar(LANG.E_FAILED_ADD); },
  60                                         LANG.WAIT_ADDING);
  61                 }
  62                 else {
  63                         quickadd_clean();
  64                 }
  65         }
  66         else if(key==27) { // esc :(
  67                 stop_event(e);
  68                 qa.value = "";
  69                 qa.blur();
  70                 quickadd_hide();
  71         }
  72         else if(key>=37&&key<=40) { /* left up right down */
  73                 if(key==40) { // down
  74                         quickadd_move_selection(1);
  75                         stop_event(e);
  76                 }
  77                 else if(key==38) {  // up
  78                         quickadd_move_selection(-1);
  79                         stop_event(e);
  80                 }
  81                 else if(key==39) { // right
  82                         var txt_node = document.getElementById('qa_suggestions_txt');
  83                         var elems = txt_node.getElementsByTagName("span");
  84                         var sel = qa_get_selected_id(elems);
  85                         if(sel>=0) {
  86                                 //stop_event(e);
  87                                 qa.value = elems[sel].name + "/";
  88                                 quickadd_keyup_handler();
  89                                 qa.focus();
  90                                 setCaretToEnd(qa);
  91                         }
  92                 }
  93                 else if(key==37) { // left
  94                 }
  95         }
  96 }
  97
  98 function quickadd_clean() {
  99         var qa = document.getElementById('quickadd');
 100         qa.value = "";
 101         qa.blur();
 102         quickadd_hide();
 103 }
 104
 105 function qa_get_selected_id(elems) {
 106         for(var i=0; i<elems.length; i++) {
 107                 if(elems[i].hasAttribute("qa_selected")) {
 108                         return i;
 109                 }
 110         }
 111         return -1;
 112 }
 113
 114 function quickadd_move_selection(num) {
 115         var txt_node = document.getElementById('qa_suggestions_txt');
 116         var elems = txt_node.getElementsByTagName("span");
 117         var sel_node = qa_get_selected_id(elems);
 118
 119         if(sel_node>=0) {
 120                 elems[sel_node].removeAttribute("qa_selected");
 121         }
 122
 123         num = num+sel_node;
 124
 125         if(num>=elems.length ||num==-1) {
 126                 return;
 127         }
 128         else if(num<0) // flip it around
 129                 num=elems.length-1;
 130         elems[num].setAttribute("qa_selected", "omg");
 131         /* safari workaround */
 132         elems[num].className = elems[num].className;
 133 }
 134
 135 function quickadd_hide() {
 136         var txt_node = document.getElementById('qa_suggestions_txt');
 137         var qa_disp = document.getElementById('qa_suggestions');
 138         qa_disp.style.display = "none";
 139         remove_children(txt_node);
 140 }
 141
 142 function quickadd_keyup_handler(e) {
 143         var qa = document.getElementById('quickadd');
 144         var search_str = qa.value;
 145         search_str = search_str.trim();
 146
 147         /* unwanted event */
 148         if(e) {
 149                 e.stopPropagation();
 150                 if(e.altKey||e.metaKey||e.ctrlKey) {
 151                         return;
 152                 }
 153         }
 154
 155         if(search_str.length>0) {
 156                 if(search_str!=quickadd_last_term) {
 157                         quickadd_last_term = search_str;
 158                         send_command("quick_search=" + encodeURIComponent(search_str), quickadd_result_handler);
 159                 }
 160         }
 161         else {
 162                 var txt_node = document.getElementById('qa_suggestions_txt');
 163                 remove_children(txt_node);
 164                 quickadd_last_term = "";
 165         }
 166 }
 167
 168 function quickadd_result_handler(res) {
 169         var txt_node = document.getElementById('qa_suggestions_txt');
 170         if(!res||res=="failed") {
 171                 remove_children(txt_node);
 172                 txt_node.appendChild(create_txt(LANG.E_NOTHING_FOUND));
 173         }
 174         else {
 175                 remove_children(txt_node);
 176                 for(var ix in res) {
 177                         var name = res[ix];
 178                         var node = create_node("span");
 179                         node.className = "qa_element";
 180                         node.name = name;
 181                         var idx = name.lastIndexOf(DIR_SEPARATOR);
 182                         node.appendChild(create_txt((idx>0?"..":"") + name.substring(idx)));
 183                         txt_node.appendChild(node);
 184                 }
 185         }
 186 }