53 lines
1.6 KiB
JavaScript
53 lines
1.6 KiB
JavaScript
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/**
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* Waiter to handle events related to the window object.
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*
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*
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* @constructor
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* @param {HTMLApp} app - The main view object for CyberChef.
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*/
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var WindowWaiter = function(app) {
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this.app = app;
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};
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/**
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* Handler for window resize events.
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* Resets the layout of CyberChef's panes after 200ms (so that continuous resizing doesn't cause
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* continuous resetting).
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*/
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WindowWaiter.prototype.window_resize = function() {
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clearTimeout(this.reset_layout_timeout);
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this.reset_layout_timeout = setTimeout(this.app.reset_layout.bind(this.app), 200);
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};
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/**
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* Handler for window blur events.
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* Saves the current time so that we can calculate how long the window was unfocussed for when
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* focus is returned.
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*/
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WindowWaiter.prototype.window_blur = function() {
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this.window_blur_time = new Date().getTime();
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};
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/**
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* Handler for window focus events.
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*
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* When a browser tab is unfocused and the browser has to run lots of dynamic content in other
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* tabs, it swaps out the memory for that tab.
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* If the CyberChef tab has been unfocused for more than a minute, we run a silent bake which will
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* force the browser to load and cache all the relevant JavaScript code needed to do a real bake.
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* This will stop baking taking a long time when the CyberChef browser tab has been unfocused for
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* a long time and the browser has swapped out all its memory.
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*/
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WindowWaiter.prototype.window_focus = function() {
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var unfocused_time = new Date().getTime() - this.window_blur_time;
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if (unfocused_time > 60000) {
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this.app.silent_bake();
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}
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};
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