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/* Functions used for the requirement specs tree view */

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function requirement_spec_tree_check_move(data) {
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var dragged_type = data.o.data('type');
var dropped_type = data.r.data('type');

// console.debug("dragged " + dragged_type + " dropped " + dropped_type + " dir " + data.p);

if ((dragged_type == "sections") || (dragged_type == "textblocks-front") || (dragged_type == "textblocks-back"))
return false;

if (dragged_type == "textblock") {
if ((dropped_type == "textblocks-front") || (dropped_type == "textblocks-back"))
return (data.p == "inside") || (data.p == "last");
if (dropped_type == "textblock")
return (data.p == "before") || (data.p == "after");

return false;
}

if (dragged_type == "section") {
if (dropped_type == "sections")
return (data.p == "inside") || (data.p == "last");
if (dropped_type == "section")
return (data.p == "before") || (data.p == "after");

return false;
}

// dragged_type == (sub) function blocks
if ((dropped_type == "textblock") || (dropped_type == "textblocks-front") || (dropped_type == "textblocks-back"))
return false;

var dropped_depth = dropped_type == "sections" ? 0 : dropped_type == "section" ? 1 : data.r.parent().parent().data('type') != "functionblock" ? 2 : 3;
if ((data.p == "inside") || (data.p == "last"))
dropped_depth++;

var dragged_depth = 1 + data.o.children('ul').size();

// console.debug("dropped_depth " + dropped_depth + " dragged_depth " + dragged_depth);

return (2 <= dropped_depth) && ((dragged_depth + dropped_depth) <= 4);
}

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function requirement_spec_tree_node_moved(event) {
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console.debug("node moved");
var move_obj = $.jstree._reference('#tree')._get_move();
var dragged = move_obj.o;
var dropped = move_obj.r;
var controller = dragged.data("type") == "textblock" ? "RequirementSpecTextBlock" : "RequirementSpecItem";
var data = {
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action: controller + "/dragged_and_dropped",
requirement_spec_id: $('#requirement_spec_id').val(),
id: dragged.data("id"),
dropped_id: dropped.data("id"),
dropped_type: dropped.data("type"),
position: move_obj.p,
current_content_type: $('#current_content_type').val(),
current_content_id: $('#current_content_id').val()
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};
// console.debug("controller: " + controller);
// console.debug(data);

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$.post("controller.pl", data, eval_json_result);

return true;
}

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function requirement_spec_tree_node_clicked(event) {
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var node = $.jstree._reference('#tree')._get_node(event.target);
var type = node ? node.data('type') : undefined;

if (!type)
return;

if ('sections' == type) {
$('#current_content_type').val('sections');
$('#current_content_id').val('');
return;
}

var url = 'controller.pl?action='
$.get('controller.pl', {
action: (/^textblock/ ? 'RequirementSpecTextBlock' : 'RequirementSpecItem') + '/ajax_list.js',
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requirement_spec_id: $('#requirement_spec_id').val(),
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current_content_type: $('#current_content_type').val(),
current_content_id: $('#current_content_id').val(),
clicked_type: type,
clicked_id: node.data('id')
}, function(new_data) {
$('#current_content_type').val(type);
$('#current_content_id').val(node.data('id'));
eval_json_result(new_data);
});
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}

function section_form_requested(data) {
$('#new-section-button').removeAttr('disabled');
if (data.status == "ok")
$('#content-column').html(data.html);
else
alert('oh yeah response: ' + data.status + "\n" + data.error);
}

function section_form_submitted(data) {
alert('oh yeah response: ' + data.status);
}

function server_side_error(things_to_enable) {
alert('Server-side error.');
if (things_to_enable)
$(things_to_enable).removeAttr('disabled');
}

function new_section_form() {
$('#new-section-button').attr('disabled', 'disabled');
$.ajax({
type: 'POST',
url: 'controller.pl',
data: 'action=RequirementSpecItem/new.json&requirement_spec_id=' + $('#requirement_spec_id').val() + '&item_type=section',
success: section_form_requested,
error: function() { server_side_error('#new-section-button'); }
});
}

function submit_section_form(id) {
$.ajax({
type: 'POST',
url: 'controller.pl',
data: 'action=RequirementSpecItem/create.json&' + $('section-form-' + id).serialize(),
success: section_form_submitted
});
}

function cancel_section_form(id) {
$('#content-column').html('intentionally empty');
}
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function find_text_block_id(clicked_elt) {
console.log("id: " + $(clicked_elt).attr('id'));
var id = $(clicked_elt).attr('id');
if (/^text-block-\d+$/.test(id)) {
console.log("find_text_block_id: case 1: " + id.substr(11));
return id.substr(11) * 1;
}

id = $(clicked_elt).closest("[id*=text-block-]").attr('id')
if (/^text-block-\d+$/.test(id)) {
console.log("find_text_block_id: case 2: " + id.substr(11));
return id.substr(11) * 1;
}

id = $(clicked_elt).closest("[id*=tb-]").attr('id')
if (/^tb-\d+$/.test(id)) {
console.log("find_text_block_id: case 3: " + id.substr(3));
return id.substr(3) * 1;
}

console.log("find_text_block_id: case undef");
return undefined;
}

function find_text_block_output_position(clicked_elt) {
var output_position = $(clicked_elt).closest('#text-block-list-container').find('#text_block_output_position').val();
if (output_position)
return output_position;

var type = $(clicked_elt).closest('#tb-back,#tb-front').data('type');
if (/^textblocks-(front|back)/.test(type))
return type == "textblocks-front" ? 0 : 1;

return undefined;
}

function disable_edit_text_block_commands(key, opt) {
return find_text_block_id(opt.$trigger) == undefined;
}

function edit_text_block(key, opt) {
var data = {
action: "RequirementSpecTextBlock/ajax_edit",
id: find_text_block_id(opt.$trigger),
current_content_type: $('#current_content_type').val(),
current_content_id: $('#current_content_id').val()
};
$.post("controller.pl", data, eval_json_result);
return true;
}

function add_text_block(key, opt) {
return true;
}

function delete_text_block(key, opt) {
var data = {
action: "RequirementSpecTextBlock/ajax_delete",
id: find_text_block_id(opt.$trigger),
current_content_type: $('#current_content_type').val(),
current_content_id: $('#current_content_id').val()
};
$.post("controller.pl", data, eval_json_result);
return true;
}

function submit_edit_text_block_form(id_base) {
var url = "controller.pl?" + $('#' + id_base + '_form').serialize();
var data = {
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action: 'RequirementSpecTextBlock/ajax_update',
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id: $('#' + id_base + '_id').val(),
form_prefix: id_base
};
console.log("posting edit text block: " + url);
console.log(data);
$.post(url, data, eval_json_result);
}

function cancel_edit_text_block_form(id_base) {
var id = $('#' + id_base + '_id').val();
$('#' + id_base + '_form').remove();
if (id)
$('#text-block-' + id).show();
}