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Viewing file:     keyhandler.js (3.23 KB)      -rw-rw-rw-

/* vim: set expandtab sw=4 ts=4 sts=4: */

// global var that holds: 0- if ctrl key is not pressed 1- if ctrl key is pressed
var ctrlKeyHistory = 0;

/**
  * Allows moving around inputs/select by Ctrl+arrows
  *
  * @param object   event data
  */
function onKeyDownArrowsHandler(e)
{
    e = e || window.event;

    var o = (e.srcElement || e.target);
    if (!o) {
        return;
    }
    if (o.tagName != "TEXTAREA" && o.tagName != "INPUT" && o.tagName != "SELECT") {
        return;
    }
    if ((e.which != 17) && (e.which != 37) && (e.which != 38) && (e.which != 39) && (e.which !=40)) {
        return;
    }
    if (!o.id) {
        return;
    }

    if (e.type == "keyup") {
        if (e.which==17) {
            ctrlKeyHistory = 0;
        }
        return;
    }
    else if (e.type == "keydown") {
        if (e.which == 17) {
            ctrlKeyHistory = 1;
        }
    }

    if (ctrlKeyHistory != 1) {
        return;
    }

    e.preventDefault();

    var pos = o.id.split("_");
    if (pos[0] != "field" || typeof pos[2] == "undefined") {
        return;
    }

    var x = pos[2], y = pos[1];

    var nO = null;

    switch (e.keyCode) {
    case 38:
        // up
        y--;
        break;
    case 40:
        // down
        y++;
        break;
    case 37:
        // left
        x--;
        break;
    case 39:
        // right
        x++;
        break;
    default:
        return;
    }

    var is_firefox = navigator.userAgent.toLowerCase().indexOf("firefox/") > -1;

    var id = "field_" + y + "_" + x;
    nO = document.getElementById(id);
    if (! nO) {
        id = "field_" + y + "_" + x + "_0";
        nO = document.getElementById(id);
    }

    // skip non existent fields
    if (! nO) {
        return;
    }

    // for firefox select tag
    var lvalue = o.selectedIndex;
    var nOvalue = nO.selectedIndex;

    nO.focus();

    if (is_firefox) {
        var ffcheck = 0;
        var ffversion;
        for (ffversion = 3 ; ffversion < 25 ; ffversion++) {
            var is_firefox_v_24 = navigator.userAgent.toLowerCase().indexOf('firefox/'+ffversion) > -1;
            if (is_firefox_v_24) {
                ffcheck = 1;
                break;
            }
        }
        if (ffcheck == 1) {
            if (e.which == 38 || e.which == 37) {
                nOvalue++;
            }
            else if (e.which == 40 || e.which == 39) {
                nOvalue--;
            }
            nO.selectedIndex=nOvalue;
        }
        else {
            if (e.which == 38 || e.which == 37) {
                lvalue++;
            }
            else if (e.which == 40 || e.which == 39) {
                lvalue--;
            }
            o.selectedIndex=lvalue;
        }
    }

    if (nO.tagName != 'SELECT') {
        nO.select();
    }
    e.returnValue = false;
}

AJAX.registerTeardown('keyhandler.js', function () {
    $('#table_columns').die('keydown keyup');
    $('table.insertRowTable').die('keydown keyup');
});

AJAX.registerOnload('keyhandler.js', function () {
    $('#table_columns').live('keydown keyup', function (event) {
        onKeyDownArrowsHandler(event.originalEvent);
    });
    $('table.insertRowTable').live('keydown keyup', function (event) {
        onKeyDownArrowsHandler(event.originalEvent);
    });
});