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Code Issues Releases Wiki Activity

Initial pass at sticky headers for the LHS panel section labels

pull/21833/head
wmwragg 2016-08-25 19:46:01 +01:00
parent 6a4d02ffc5
commit 7fcdd0f77a
1 changed files with 98 additions and 2 deletions
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100
src/components/views/rooms/RoomList.js
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@ -66,6 +66,11 @@ module.exports = React.createClass({
this.dispatcherRef = dis.register(this.onAction);
},
componentDidUpdate: function() {
// Reinitilaise the stickyHeaders when the component is created or updated
this._updateStickyHeaders(undefined, true);
},
onAction: function(payload) {
switch (payload.action) {
case 'view_tooltip':
@ -252,9 +257,10 @@ module.exports = React.createClass({
}
},
_repositionTooltips: function(e) {
_whenScrolling: function(e) {
this._repositionTooltip(e);
this._repositionIncomingCallBox(e, false);
this._updateStickyHeaders(e, false);
},
_repositionTooltip: function(e) {
@ -305,6 +311,96 @@ module.exports = React.createClass({
}
},
_initAndPositionStickyHeaders: function(e, firstTime) {
// Do the sticky header stuf here, both the initilaisation (firstTime === true)
// and the updating when scrolling (firstTime === false)
// use direct DOM access as done in _repositionIncomingCallBox
var self = this;
var stickies = document.getElementsByClassName("mx_RoomSubList_stickyContainer");
var scrollArea = self._getScrollNode();
var scrollAreaHeight = scrollArea.getBoundingClientRect().height;
// console.log(scrollArea);
// console.log("scrollAreaHeight: " + scrollAreaHeight);
if (firstTime) {
if (typeof stickies === "object" && stickies.length > 0) {
// Initialise the sticky headers
self.stickyWrappers = Array.prototype.map.call(stickies, function(sticky, i) {
sticky.dataset.originalPosition = sticky.offsetTop - scrollArea.offsetTop;
var originalHeight = sticky.getBoundingClientRect().height;
sticky.dataset.originalHeight = originalHeight;
sticky.style.height = originalHeight;
return sticky;
});
}
}
Array.prototype.forEach.call(self.stickyWrappers, function(sticky, i, stickyWrappers) {
var stickyPosition = sticky.dataset.originalPosition;
var stickyHeight = sticky.dataset.originalHeight;
var stickyHeader = sticky.childNodes[0];
var topStuckHeight = stickyHeight * i;
var bottomStuckHeight = stickyHeight * (stickyWrappers.length - i)
// console.log("i: " + i);
// console.log("scrollArea.scrollTop: " + scrollArea.scrollTop);
// console.log("scrollArea.offsetTop: " + scrollArea.offsetTop);
// console.log("stickyPosition: " + stickyPosition);
// console.log("stickyHeight: " + stickyHeight);
//console.log(stickyHeader);
// console.log("topStuckHeight: " + topStuckHeight);
// console.log("bottomStuckHeight: " + bottomStuckHeight);
if (stickyPosition <= (scrollArea.scrollTop + topStuckHeight)) {
// Top stickies
// console.log("Top stickies");
stickyHeader.classList.add("mx_RoomSubList_fixed");
//sticky.style.height = stickyHeight + "px";
stickyHeader.style.top = scrollArea.offsetTop + topStuckHeight + "px";
} else if (stickyPosition >= ((scrollArea.scrollTop + scrollAreaHeight) - bottomStuckHeight)) {
/// Bottom stickies
//console.log("Bottom stickies");
stickyHeader.classList.add("mx_RoomSubList_fixed");
//sticky.style.height = stickyHeight + "px";
stickyHeader.style.top = (scrollArea.offsetTop + scrollAreaHeight) - bottomStuckHeight + "px";
} else {
// Not sticky
//console.log("Not sticky");
stickyHeader.classList.remove("mx_RoomSubList_fixed");
//sticky.style.height = null;
stickyHeader.style.top = null;
}
});
},
_stickyWrappers: [],
_updateStickyHeaders: function(e, firstTime) {
// Do the sticky header stuff here, both the initilaisation (firstTime === true)
// and the updating when scrolling (firstTime === false)
// use direct DOM access as done in _repositionIncomingCallBox
var self = this;
if (firstTime) {
// Useing requestAnimationFrame to ensure that the code is run after the painting
// of the newly rendered object
window.requestAnimationFrame(function() {
//console.log("### D E B U G requestAnimationFrame S T A R T ###");
self._initAndPositionStickyHeaders(e, firstTime);
//console.log("### D E B U G requestAnimationFrame F I N I S H ###");
});
} else {
//console.log("### D E B U G S T A R T ###");
this._initAndPositionStickyHeaders(e, firstTime);
//console.log("### D E B U G F I N I S H ###");
}
},
onShowMoreRooms: function() {
// kick gemini in the balls to get it to wake up
// XXX: uuuuuuugh.
@ -317,7 +413,7 @@ module.exports = React.createClass({
return (
<GeminiScrollbar className="mx_RoomList_scrollbar"
autoshow={true} onScroll={ self._repositionTooltips } ref="gemscroll">
autoshow={true} onScroll={ self._whenScrolling } ref="gemscroll">
<div className="mx_RoomList">
<RoomSubList list={ self.state.lists['im.vector.fake.invite'] }
label="Invites"