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GUAC-705: Only call window.scrollTo() when absolutely necessary.

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This commit is contained in:
Michael Jumper
2014-05-20 16:23:09 -07:00
parent 18ece342cd
commit f56757c0a9
1 changed files with 21 additions and 15 deletions
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36
guacamole/src/main/webapp/scripts/client-ui.js
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@@ -1583,26 +1583,32 @@ GuacUI.Client.attach = function(guac) {
* Reflow layout and send size events on resize/scroll * Reflow layout and send size events on resize/scroll
*/ */
var last_scroll_top = 0; var last_scroll_left = 0;
var last_scroll_left = 0; var last_scroll_top = 0;
var last_width = 0; var last_scroll_width = 0;
var last_height = 0; var last_scroll_height = 0;
var last_window_width = 0;
var last_window_height = 0;
function __update_layout() { function __update_layout() {
// Reset scroll and reposition document such that it's on-screen
window.scrollTo(document.body.scrollWidth, document.body.scrollHeight);
// Only reflow if size or scroll have changed // Only reflow if size or scroll have changed
if (document.body.scrollTop != last_scroll_top if (document.body.scrollLeft !== last_scroll_left
|| document.body.scrollLeft != last_scroll_left || document.body.scrollTop !== last_scroll_top
|| window.innerWidth != last_width || document.body.scrollWidth !== last_scroll_width
|| window.innerHeight != last_height) { || document.body.scrollHeight !== last_scroll_height
|| window.innerWidth !== last_window_width
|| window.innerHeight !== last_window_height) {
last_scroll_top = document.body.scrollTop; last_scroll_top = document.body.scrollTop;
last_scroll_left = document.body.scrollLeft; last_scroll_left = document.body.scrollLeft;
last_width = window.innerWidth; last_scroll_width = document.body.scrollWidth;
last_height = window.innerHeight; last_scroll_height = document.body.scrollHeight;
last_window_width = window.innerWidth;
last_window_height = window.innerHeight;
// Reset scroll and reposition document such that it's on-screen
window.scrollTo(document.body.scrollWidth, document.body.scrollHeight);
// Determine height of bottom section (currently only text input) // Determine height of bottom section (currently only text input)
var bottom = GuacUI.Client.text_input.container; var bottom = GuacUI.Client.text_input.container;