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tree_editor.js
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457 lines (405 loc) · 13.4 KB
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/* global Cookies, feincms */
// Suppress initial rendering of result list, but only if we can show it with
// JS later on.
document.write('<style type="text/css">#result_list { display: none }</style>')
// https://docs.djangoproject.com/en/1.4/ref/contrib/csrf/
feincms.jQuery.ajaxSetup({
crossDomain: false, // obviates need for sameOrigin test
beforeSend(xhr, settings) {
if (!/^(GET|HEAD|OPTIONS|TRACE)$/.test(settings.type)) {
xhr.setRequestHeader(
"X-CSRFToken",
document.querySelector('input[name="csrfmiddlewaretoken"]').value,
)
}
},
})
feincms.jQuery(($) => {
$(document.body).on("click", "[data-inplace]", function () {
const elem = $(this),
id = elem.data("inplace-id"),
attr = elem.data("inplace-attribute")
$.ajax({
url: ".",
type: "POST",
dataType: "json",
data: {
__cmd: "toggle_boolean",
item_id: id,
attr,
},
success(data) {
$.each(data, (_i, html) => {
const r_id = $(html).attr("id")
$(`#${r_id}`).replaceWith(html)
})
},
error(xhr, _status, _err) {
alert(`Unable to toggle ${attr}: ${xhr.responseText}`)
},
})
})
/* Extract an object id (numeric) from a DOM id. Assumes that a "-" is used
as delimiter. Returns either the id found or 0 if something went wrong.
extractItemId('foo_bar_baz-327') -> 327
*/
function extractItemId(elem_id) {
const i = elem_id.indexOf("-")
if (i >= 0) return parseInt(elem_id.slice(i + 1), 10)
return 0
}
function isExpandedNode(id) {
return feincms.collapsed_nodes.indexOf(id) === -1
}
function markNodeAsExpanded(id) {
// remove itemId from array of collapsed nodes
const idx = feincms.collapsed_nodes.indexOf(id)
if (idx >= 0) feincms.collapsed_nodes.splice(idx, 1)
}
function markNodeAsCollapsed(id) {
if (isExpandedNode(id)) feincms.collapsed_nodes.push(id)
}
// toggle children
function doToggle(id, show) {
const children = feincms.tree_structure[id] || []
for (let i = 0; i < children.length; ++i) {
const childId = children[i]
if (show) {
$(`#page_marker-${childId}`).closest("tr").show()
// only reveal children if current node is not collapsed
if (isExpandedNode(childId)) {
doToggle(childId, show)
}
} else {
$(`#page_marker-${childId}`).closest("tr").hide()
// always recursively hide children
doToggle(childId, show)
}
}
}
function rowLevel($row) {
const level =
feincms.node_levels[extractItemId($row.find(".page_marker").attr("id"))]
return (level || 0) + 1
}
/*
* FeinCMS Drag-n-drop tree reordering.
* Based upon code by bright4 for Radiant CMS, rewritten for
* FeinCMS by Bjorn Post.
*
* September 2010
*
*/
$.extend(
($.fn.feinTree = function () {
$.each(feincms.tree_structure, (key, _value) => {
$(`#page_marker-${key}`).addClass("children")
})
$("div.drag_handle").bind("mousedown", (event) => {
const BEFORE = 0
const AFTER = 1
const CHILD = 2
const CHILD_PAD = 20
const originalRow = $(event.target).closest("tr")
const rowHeight = originalRow.height()
const moveTo = new Object()
$("body")
.addClass("dragging")
.disableSelection()
.bind("mousemove", (event) => {
// attach dragged item to mouse
const cloned = originalRow.html()
if ($("#ghost").length === 0) {
$('<div id="ghost"></div>').appendTo("body")
}
$("#ghost")
.html(cloned)
.css({
opacity: 0.8,
position: "absolute",
top: event.pageY,
left: event.pageX - 30,
width: 600,
})
// check on edge of screen
if (
event.pageY + 100 >
$(window).height() + $(window).scrollTop()
) {
$("html,body")
.stop()
.animate({ scrollTop: $(window).scrollTop() + 250 }, 500)
} else if (event.pageY - 50 < $(window).scrollTop()) {
$("html,body")
.stop()
.animate({ scrollTop: $(window).scrollTop() - 250 }, 500)
}
// check if drag_line element already exists, else append
if ($("#drag_line").length < 1) {
$("body").append(
'<div id="drag_line" style="position:absolute">line<div></div></div>',
)
}
// loop trough all rows
$("tr", originalRow.parent()).each((_index, element) => {
element = $(element)
const top = element.offset().top
// check if mouse is over a row
if (event.pageY >= top && event.pageY < top + rowHeight) {
let targetRow = null,
targetLoc = null,
elementLevel = rowLevel(element)
if (event.pageY >= top && event.pageY < top + rowHeight / 3) {
targetRow = element
targetLoc = BEFORE
} else if (
event.pageY >= top + rowHeight / 3 &&
event.pageY < top + (rowHeight * 2) / 3
) {
const next = element.next()
// there's no point in allowing adding children when there are some already
// better move the items to the correct place right away
if (!next.length || rowLevel(next) <= elementLevel) {
targetRow = element
targetLoc = CHILD
}
} else if (
event.pageY >= top + (rowHeight * 2) / 3 &&
event.pageY < top + rowHeight
) {
const next = element.next()
if (!next.length || rowLevel(next) <= elementLevel) {
targetRow = element
targetLoc = AFTER
}
}
if (targetRow) {
const padding =
37 +
rowLevel(element) * CHILD_PAD +
(targetLoc === CHILD ? CHILD_PAD : 0)
$("#drag_line").css({
width: targetRow.width() - padding,
left: targetRow.offset().left + padding,
top:
targetRow.offset().top +
(targetLoc === AFTER || targetLoc === CHILD
? rowHeight
: 0) -
1,
})
// Store the found row and options
moveTo.hovering = element
moveTo.relativeTo = targetRow
moveTo.side = targetLoc
return true
}
}
})
})
$("body").keydown((event) => {
if (event.which === "27") {
$("#drag_line").remove()
$("#ghost").remove()
$("body")
.removeClass("dragging")
.enableSelection()
.unbind("mousemove")
.unbind("mouseup")
event.preventDefault()
}
})
$("body").bind("mouseup", () => {
if (moveTo.relativeTo) {
const cutItem = extractItemId(
originalRow.find(".page_marker").attr("id"),
)
const pastedOn = extractItemId(
moveTo.relativeTo.find(".page_marker").attr("id"),
)
// get out early if items are the same
if (cutItem !== pastedOn) {
const isParent =
rowLevel(moveTo.relativeTo.next()) > rowLevel(moveTo.relativeTo)
let position = ""
// determine position
if (moveTo.side === CHILD && !isParent) {
position = "last-child"
} else if (moveTo.side === BEFORE) {
position = "left"
} else {
position = "right"
}
// save
$.post(
".",
{
__cmd: "move_node",
position,
cut_item: cutItem,
pasted_on: pastedOn,
},
() => {
window.location.reload()
},
)
} else {
$("#drag_line").remove()
$("#ghost").remove()
}
$("body")
.removeClass("dragging")
.enableSelection()
.unbind("mousemove")
.unbind("mouseup")
}
})
})
return this
}),
)
/* Every time the user expands or collapses a part of the tree, we remember
the current state of the tree so we can restore it on a reload.
Note: We might use html5's session storage? */
function storeCollapsedNodes(nodes) {
const v = JSON.stringify(nodes)
Cookies.set("feincms_collapsed_nodes", v, {
expires: 7,
sameSite: "strict",
})
}
function retrieveCollapsedNodes() {
const collapse_cookie = Cookies.get("feincms_collapsed_nodes")
return collapse_cookie ? JSON.parse(collapse_cookie) : null
}
function expandOrCollapseNode(item) {
let show = true
if (!item.hasClass("children")) return
const itemId = extractItemId(item.attr("id"))
if (!isExpandedNode(itemId)) {
item.removeClass("closed")
markNodeAsExpanded(itemId)
} else {
item.addClass("closed")
show = false
markNodeAsCollapsed(itemId)
}
storeCollapsedNodes(feincms.collapsed_nodes)
doToggle(itemId, show)
}
// bind the collapse all children event
$.extend(
($.fn.bindCollapseTreeEvent = function () {
$(this).click(() => {
rlist = $("#result_list")
rlist.hide()
$("tbody tr", rlist).each((_i, el) => {
const marker = $(".page_marker", el)
if (marker.hasClass("children")) {
const itemId = extractItemId(marker.attr("id"))
doToggle(itemId, false)
marker.addClass("closed")
markNodeAsCollapsed(itemId)
}
})
storeCollapsedNodes(feincms.collapsed_nodes)
rlist.show()
})
return this
}),
)
// bind the open all children event
$.extend(
($.fn.bindOpenTreeEvent = function () {
$(this).click(() => {
rlist = $("#result_list")
rlist.hide()
$("tbody tr", rlist).each((_i, el) => {
const marker = $("span.page_marker", el)
if (marker.hasClass("children")) {
const itemId = extractItemId($("span.page_marker", el).attr("id"))
doToggle(itemId, true)
marker.removeClass("closed")
markNodeAsExpanded(itemId)
}
})
storeCollapsedNodes([])
rlist.show()
})
return this
}),
)
const changelist_tab = (elem, event, direction) => {
event.preventDefault()
elem = $(elem)
const ne =
direction > 0
? elem.nextAll(":visible:first")
: elem.prevAll(":visible:first")
if (ne) {
elem.attr("tabindex", -1)
ne.attr("tabindex", "0")
ne.focus()
}
}
function keyboardNavigationHandler(event) {
// console.log('keydown', this, event.keyCode);
switch (event.keyCode) {
case 40: // down
changelist_tab(this, event, 1)
break
case 38: // up
changelist_tab(this, event, -1)
break
case 37: // left
case 39: // right
expandOrCollapseNode($(this).find(".page_marker"))
break
case 13: {
const where_to = extractItemId($("span", this).attr("id"))
document.location = `${document.location.pathname + where_to}/`
break
}
default:
break
}
}
// fire!
let rlist = $("#result_list"),
rlist_tbody = rlist.find("tbody")
if ($("tbody tr", rlist).length > 1) {
rlist.hide()
rlist_tbody.feinTree()
rlist.find(".page_marker").on("click", function (event) {
event.preventDefault()
event.stopPropagation()
expandOrCollapseNode($(this))
})
$("#collapse_entire_tree").bindCollapseTreeEvent()
$("#open_entire_tree").bindOpenTreeEvent()
// Disable things user cannot do anyway (object level permissions)
const non_editable_fields = $(".tree-item-not-editable", rlist).parents(
"tr",
)
non_editable_fields.addClass("non-editable")
$("input:checkbox", non_editable_fields).attr("disabled", "disabled")
$("a:first", non_editable_fields).click((e) => {
e.preventDefault()
})
$(".drag_handle", non_editable_fields).removeClass("drag_handle")
/* Enable focussing, put focus on first result, add handler for keyboard navigation */
$("tr", rlist).attr("tabindex", -1)
$("tbody tr:first", rlist).attr("tabindex", 0).focus()
$("tr", rlist).keydown(keyboardNavigationHandler)
feincms.collapsed_nodes = []
const storedNodes = retrieveCollapsedNodes()
if (storedNodes == null) {
$("#collapse_entire_tree").click()
} else {
for (let i = 0; i < storedNodes.length; i++) {
expandOrCollapseNode($(`#page_marker-${storedNodes[i]}`))
}
}
}
rlist.show()
})