[patchfork.git] / std / quickadd.js

/* 
    Pitchfork Music Player Daemon Client
    Copyright (C) 2007  Roger Bystrøm

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; version 2 of the License.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

var quickadd_last_term = "";

function quickadd_focus(e) {
        var qa = document.getElementById('quickadd');
        var qa_disp = document.getElementById('qa_suggestions');
        if(e&&e.type&&e.type!="focus");
                qa.focus();
        if(qa.value==qa.defaultValue) {
                qa.value = "";
        }
        qa_disp.style.display = "block";
}
function quickadd_blur(e) {
        var qa = document.getElementById('quickadd');
        var qa_disp = document.getElementById('qa_suggestions');

        if(qa.value.trim().length==0) {
                qa.value=qa.defaultValue;
                quickadd_hide();
        }
}
function quickadd_keydown_handler(e) { 
        e.stopPropagation(); 
        var qa = document.getElementById('quickadd');
        var key = e.keyCode;

        /* return key, send request to add if something to add */
        if(key==RETURN_KEY_CODE) {
                stop_event(e);
                var add = qa.value;
                add = add.trim();
                if(add.length>0) {
                        var txt_node = document.getElementById('qa_suggestions_txt');
                        var elems = txt_node.getElementsByTagName("span");
                        var i = qa_get_selected_id(elems);
                        if(i>=0) {
                                add = elems[i].name;
                        }
                        quickadd_clean();
                        send_command("add=" + encodeURIComponent(add), function(response) 
                                        { if(response=="failed") show_status_bar(LANG.E_FAILED_ADD); }, 
                                        LANG.WAIT_ADDING);
                }
                else {
                        quickadd_clean();
                }
        }
        else if(key==27) { // esc :(
                stop_event(e);
                qa.value = "";
                qa.blur();
                quickadd_hide();
        }
        else if(key>=37&&key<=40) { /* left up right down */
                if(key==40) { // down
                        quickadd_move_selection(1);
                        stop_event(e);
                }
                else if(key==38) {  // up
                        quickadd_move_selection(-1);
                        stop_event(e);
                }
                else if(key==39) { // right
                        var txt_node = document.getElementById('qa_suggestions_txt');
                        var elems = txt_node.getElementsByTagName("span");
                        var sel = qa_get_selected_id(elems);
                        if(sel>=0) {
                                //stop_event(e);
                                qa.value = elems[sel].name + "/";
                                quickadd_keyup_handler();
                                qa.focus();
                                setCaretToEnd(qa);
                        }
                }
                else if(key==37) { // left
                }
        }
}

function quickadd_clean() {
        var qa = document.getElementById('quickadd');
        qa.value = "";
        qa.blur();
        quickadd_hide();
}

function qa_get_selected_id(elems) {
        for(var i=0; i<elems.length; i++) {
                if(elems[i].hasAttribute("qa_selected")) {
                        return i;
                }
        }
        return -1;
}

function quickadd_move_selection(num) {
        var txt_node = document.getElementById('qa_suggestions_txt');
        var elems = txt_node.getElementsByTagName("span");
        var sel_node = qa_get_selected_id(elems);

        if(sel_node>=0) {
                elems[sel_node].removeAttribute("qa_selected");
        }

        num = num+sel_node;

        if(num>=elems.length ||num==-1) {
                return;
        }
        else if(num<0) // flip it around
                num=elems.length-1;
        elems[num].setAttribute("qa_selected", "omg");
        /* safari workaround */
        elems[num].className = elems[num].className;
}

function quickadd_hide() {
        var txt_node = document.getElementById('qa_suggestions_txt');
        var qa_disp = document.getElementById('qa_suggestions');
        qa_disp.style.display = "none";
        remove_children(txt_node);
}

function quickadd_keyup_handler(e) {
        var qa = document.getElementById('quickadd');
        var search_str = qa.value;
        search_str = search_str.trim();

        /* unwanted event */
        if(e) {
                e.stopPropagation(); 
                if(e.altKey||e.metaKey||e.ctrlKey) {
                        return;
                }
        }

        if(search_str.length>0) {
                if(search_str!=quickadd_last_term) {
                        quickadd_last_term = search_str;
                        send_command("quick_search=" + encodeURIComponent(search_str), quickadd_result_handler);
                }
        }
        else {
                var txt_node = document.getElementById('qa_suggestions_txt');
                remove_children(txt_node);
                quickadd_last_term = "";
        }
}

function quickadd_result_handler(res) {
        var txt_node = document.getElementById('qa_suggestions_txt');
        if(!res||res=="failed") {
                remove_children(txt_node);
                txt_node.appendChild(create_txt(LANG.E_NOTHING_FOUND));
        }
        else {
                remove_children(txt_node);
                for(var ix in res) {
                        var name = res[ix];
                        var node = create_node("span");
                        node.className = "qa_element";
                        node.name = name;
                        var idx = name.lastIndexOf(DIR_SEPARATOR);
                        node.appendChild(create_txt((idx>0?"..":"") + name.substring(idx)));
                        txt_node.appendChild(node);
                }
        }
}