/* The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is the Bugzilla Bug Tracking System.
 *
 * The Initial Developer of the Original Code is Netscape Communications
 * Corporation. Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): Myk Melez <myk@mozilla.org>
 *                 Joel Peshkin <bugreport@peshkin.net>
 *                 Erik Stambaugh <erik@dasbistro.com>
 *                 Marc Schumann <wurblzap@gmail.com>
 */

var SUPA_JAVA_DISABLED_ERROR = 'You cannot paste images from clipboard because Java support'+
    ' is not enabled in your browser. Please download Java plugin'+
    ' from http://java.com/';

function htmlspecialchars_decode(str)
{
    str = str.replace(/&gt;/g, '>');
    str = str.replace(/&lt;/g, '<');
    str = str.replace(/&quot;/g, '"');
    str = str.replace(/&apos;/g, '\'');
    str = str.replace(/&amp;/g, '&');
    return str;
}

function switchAttype(chk)
{
    var t = chk.value=='text';
    var s = chk.value=='supa';
    var sr = document.getElementById('attype_supa_row');
    s = s && sr;
    document.getElementById('attype_text_row').style.display = t ? '' : 'none';
    document.getElementById('attype_file_row').style.display = t || s ? 'none' : '';
    if (sr) sr.style.display = s ? '' : 'none';
    document.getElementById('content_type_row').style.display = s ? 'none' : '';
    var d = document.getElementById('description');
    if (s)
    {
        if (d.value == '')
            d.value = 'Screenshot.png';
        document.getElementById('manual').checked = true;
        document.getElementById('contenttypeentry').value = 'image/png';
        document.getElementById('ispatch').checked = false;
        setContentTypeDisabledState(chk.form);
        var sc = document.getElementById('supa_container');
        if (sc.innerHTML.toLowerCase().indexOf('<applet') < 0)
            sc.innerHTML = htmlspecialchars_decode(sc.innerHTML);
    }
    else
    {
        if (d.value == 'Screenshot.png')
            d.value = '';
        document.getElementById('base64_content').value = '';
    }
}

function supaPasteAgain()
{
    var s = document.getElementById('SupaApplet');
    if (!s)
        return false;
    try
    {
        s.pasteFromClipboard();
    }
    catch(e)
    {
        alert(SUPA_JAVA_DISABLED_ERROR);
        return false;
    }
    return true;
}

function setContentTypeDisabledState(form)
{
    var isdisabled = false;
    if (form.ispatch.checked)
        isdisabled = true;
    for (var i = 0; i < form.contenttypemethod.length; i++)
        form.contenttypemethod[i].disabled = isdisabled;
    form.contenttypeselection.disabled = isdisabled;
    form.contenttypeentry.disabled = isdisabled;
}

function encodeSupaContent()
{
    var s = document.getElementById('attype_supa');
    if (s && s.checked)
    {
        try
        {
            s = document.getElementById('SupaApplet').getEncodedString();
        }
        catch(e)
        {
            alert(SUPA_JAVA_DISABLED_ERROR);
            var c = document.getElementById('attype_file');
            c.checked = true;
            switchAttype(c);
            return false;
        }
        document.getElementById('base64_content').value = s;
    }
    return true;
}

function validateAttachmentForm(theform)
{
    var desc = theform.description.value.replace(/^\s+|\s+$/, '');
    if (desc == '')
    {
        alert(BUGZILLA.string.attach_desc_required);
        return false;
    }
    if (!encodeSupaContent())
        return false;
    return true;
}

function updateCommentPrivacy(checkbox)
{
    var text_elem = document.getElementById('comment');
    if (checkbox.checked)
        text_elem.className = 'bz_private';
    else
        text_elem.className = '';
}

function DataFieldHandler()
{
    var field_data = document.getElementById("data");
    var fd_empty = field_data.value.match(/^\s*$/);
    var field_description = document.getElementById("description");
    if (!field_description._changed && !fd_empty)
    {
        l = field_data.value.lastIndexOf('/')+1;
        lw = field_data.value.lastIndexOf('\\')+1;
        if (lw > l)
            l = lw;
        field_description.value = field_data.value.substr(l);
    }
}

function clearAttachmentFields()
{
    var element;
    document.getElementById('data').value = '';
    DataFieldHandler();
    if ((element = document.getElementById('bigfile')))
        element.checked = '';
    document.getElementById('description').value = '';
    /* Fire onchange so that the disabled state of the content-type
     * radio buttons are also reset */
    element = document.getElementById('ispatch');
    element.checked = '';
    bz_fireEvent(element, 'change');
    if ((element = document.getElementById('isprivate')))
        element.checked = '';
}

/* Functions used when viewing patches in Diff mode. */

function collapse_all()
{
    var elem = document.checkboxform.firstChild;
    while (elem != null)
    {
        if (elem.firstChild != null)
        {
            var tbody = elem.firstChild.nextSibling;
            if (tbody.className == 'file')
            {
                tbody.className = 'file_collapse';
                twisty = get_twisty_from_tbody(tbody);
                twisty.firstChild.nodeValue = '(+)';
                twisty.nextSibling.checked = false;
            }
        }
        elem = elem.nextSibling;
    }
    return false;
}

function expand_all()
{
    var elem = document.checkboxform.firstChild;
    while (elem != null)
    {
        if (elem.firstChild != null)
        {
            var tbody = elem.firstChild.nextSibling;
            if (tbody.className == 'file_collapse')
            {
                tbody.className = 'file';
                twisty = get_twisty_from_tbody(tbody);
                twisty.firstChild.nodeValue = '(-)';
                twisty.nextSibling.checked = true;
            }
        }
        elem = elem.nextSibling;
    }
    return false;
}

var current_restore_elem;

function restore_all()
{
    current_restore_elem = null;
    incremental_restore();
}

function incremental_restore()
{
    if (!document.checkboxform.restore_indicator.checked)
    {
        return;
    }
    var next_restore_elem;
    if (current_restore_elem)
    {
        next_restore_elem = current_restore_elem.nextSibling;
    }
    else
    {
        next_restore_elem = document.checkboxform.firstChild;
    }
    while (next_restore_elem != null)
    {
        current_restore_elem = next_restore_elem;
        if (current_restore_elem.firstChild != null)
        {
            restore_elem(current_restore_elem.firstChild.nextSibling);
        }
        next_restore_elem = current_restore_elem.nextSibling;
    }
}

function restore_elem(elem, alertme)
{
    if (elem.className == 'file_collapse')
    {
        twisty = get_twisty_from_tbody(elem);
        if (twisty.nextSibling.checked)
        {
            elem.className = 'file';
            twisty.firstChild.nodeValue = '(-)';
        }
    }
    else if (elem.className == 'file')
    {
        twisty = get_twisty_from_tbody(elem);
        if (!twisty.nextSibling.checked)
        {
            elem.className = 'file_collapse';
            twisty.firstChild.nodeValue = '(+)';
        }
    }
}

function twisty_click(twisty)
{
    tbody = get_tbody_from_twisty(twisty);
    if (tbody.className == 'file')
    {
        tbody.className = 'file_collapse';
        twisty.firstChild.nodeValue = '(+)';
        twisty.nextSibling.checked = false;
    }
    else
    {
        tbody.className = 'file';
        twisty.firstChild.nodeValue = '(-)';
        twisty.nextSibling.checked = true;
    }
    return false;
}

function get_tbody_from_twisty(twisty)
{
    return twisty.parentNode.parentNode.parentNode.nextSibling;
}
function get_twisty_from_tbody(tbody)
{
    return tbody.previousSibling.firstChild.nextSibling.firstChild.firstChild;
}

var prev_mode = 'raw';
var current_mode = 'raw';
var has_edited = 0;
var has_viewed_as_diff = 0;
function editAsComment(patchviewerinstalled)
{
    switchToMode('edit', patchviewerinstalled);
    has_edited = 1;
}
function undoEditAsComment(patchviewerinstalled)
{
    switchToMode(prev_mode, patchviewerinstalled);
}
function redoEditAsComment(patchviewerinstalled)
{
    switchToMode('edit', patchviewerinstalled);
}

function viewDiff(attachment_id, patchviewerinstalled)
{
    switchToMode('diff', patchviewerinstalled);
    // If we have not viewed as diff before, set the view diff frame URL
    if (!has_viewed_as_diff)
    {
        var viewDiffFrame = document.getElementById('viewDiffFrame');
        viewDiffFrame.src = 'attachment.cgi?id=' + attachment_id + '&action=diff&headers=0';
        has_viewed_as_diff = 1;
    }
}

function viewRaw(patchviewerinstalled)
{
    switchToMode('raw', patchviewerinstalled);
}

function switchToMode(mode, patchviewerinstalled)
{
    if (mode == current_mode)
    {
        alert('switched to same mode! This should not happen.');
        return;
    }

    // Switch out of current mode
    if (current_mode == 'edit')
    {
        hideElementById('editFrame');
        hideElementById('undoEditButton');
    }
    else if (current_mode == 'raw')
    {
        hideElementById('viewFrame');
        if (patchviewerinstalled)
            hideElementById('viewDiffButton');
        hideElementById(has_edited ? 'redoEditButton' : 'editButton');
        hideElementById('smallCommentFrame');
    }
    else if (current_mode == 'diff')
    {
        if (patchviewerinstalled)
            hideElementById('viewDiffFrame');
        hideElementById('viewRawButton');
        hideElementById(has_edited ? 'redoEditButton' : 'editButton');
        hideElementById('smallCommentFrame');
    }

    // Switch into new mode
    if (mode == 'edit')
    {
        showElementById('editFrame');
        showElementById('undoEditButton');
    }
    else if (mode == 'raw')
    {
        showElementById('viewFrame');
        if (patchviewerinstalled)
            showElementById('viewDiffButton');
        showElementById(has_edited ? 'redoEditButton' : 'editButton');
        showElementById('smallCommentFrame');
    }
    else if (mode == 'diff')
    {
        if (patchviewerinstalled)
            showElementById('viewDiffFrame');
        showElementById('viewRawButton');
        showElementById(has_edited ? 'redoEditButton' : 'editButton');
        showElementById('smallCommentFrame');
    }

    prev_mode = current_mode;
    current_mode = mode;
}

function hideElementById(id)
{
    var elm = document.getElementById(id);
    if (elm)
        elm.style.display = 'none';
}

function showElementById(id, val)
{
    var elm = document.getElementById(id);
    if (elm)
    {
        if (!val)
            val = 'inline';
        elm.style.display = val;
    }
}

function normalizeComments()
{
    // Remove the unused comment field from the document so its contents
    // do not get transmitted back to the server.
    var small = document.getElementById('smallCommentFrame');
    var big = document.getElementById('editFrame');
    if (small && small.style.display == 'none')
    {
        small.parentNode.removeChild(small);
    }
    if (big && big.style.display == 'none')
    {
        big.parentNode.removeChild(big);
    }
}