https://www.e1.ru/health/pharma/static/js/adv/desktopSticky.js?v=8a483e44

1(function () {
2    var STICKY_ADUNIT_NAME = 'sticky';
3    var STICKY_CONTAINER_ID = 'sticky';
4    var STICKY_Z_INDEX = 99998;
5    var DELAY_AFTER_CLOSE = 140000;
6    var FOOTER_SELECTOR = '.pharma-footer';
7    var footerObserver = null;
8    var footerInViewport = false;
9    var currentSlot = null;
10    var rerenderTimeoutId = null;
11    var isRenderInProgress = false;
12    var renderAttemptId = 0;
13
14    function getContainer() {
15        var container = document.getElementById(STICKY_CONTAINER_ID);
16
17        if (container) {
18            return container;
19        }
20
21        if (!document.body) {
22           window.console.warn('[E1 desktop sticky] document.body is not available');
23
24            return null;
25        }
26
27        container = document.createElement('div');
28        container.id = STICKY_CONTAINER_ID;
29        document.body.appendChild(container);
30
31        return container;
32    }
33
34    function clearRerenderTimeout() {
35        if (rerenderTimeoutId) {
36            clearTimeout(rerenderTimeoutId);
37            rerenderTimeoutId = null;
38        }
39    }
40
41    function destroyDesktopSticky(creativeManager, slot) {
42        var container = document.getElementById(STICKY_CONTAINER_ID);
43
44        if (container && container.parentNode) {
45            container.parentNode.removeChild(container);
46        }
47
48        if (
49            creativeManager
50            && slot
51            && typeof creativeManager.destroySlot === 'function'
52        ) {
53            creativeManager.destroySlot(slot);
54        }
55
56        if (slot && currentSlot === slot) {
57            currentSlot = null;
58        }
59    }
60
61    function renderDesktopSticky(creativeManager) {
62        var container;
63        var attemptId;
64
65        if (currentSlot || footerInViewport || isRenderInProgress) {
66            return;
67        }
68
69        if (!creativeManager || typeof creativeManager.createSlot !== 'function') {
70           window.console.warn('[E1 desktop sticky] createSlot is not available on creativeManager');
71    
72            return;
73        }
74
75        container = getContainer();
76
77        if (!container) {
78            return;
79        }
80
81        isRenderInProgress = true;
82        renderAttemptId += 1;
83        attemptId = renderAttemptId;
84
85        creativeManager.ready.then(function () {
86            return creativeManager.createSlot({
87                container: container,
88                adunit: STICKY_ADUNIT_NAME,
89                params: {
90                    priority: 1,
91                    type: 'floorAd',
92                    platform: 'desktop',
93                    slotRefreshManagerConfig: {
94                        refreshAlgorithmType: 'INTERVAL',
95                    },
96                }
97            });
98        }).then(function (slot) {
99            isRenderInProgress = false;
100
101            if (attemptId !== renderAttemptId || footerInViewport) {
102                if (
103                    slot
104                    && typeof creativeManager.destroySlot === 'function'
105                ) {
106                    creativeManager.destroySlot(slot);
107                }
108
109                return;
110            }
111
112            if (!slot) {
113               window.console.warn('[E1 desktop sticky] Failed to create slot');
114                return;
115            }
116
117            currentSlot = slot;
118
119            if (typeof slot.on === 'function') {
120                slot.on('closed', function () {
121                    destroyDesktopSticky(creativeManager, slot);
122                    clearRerenderTimeout();
123                    rerenderTimeoutId = setTimeout(function () {
124                        rerenderTimeoutId = null;
125                        if (footerInViewport) {
126                            return;
127                        }
128                        renderDesktopSticky(creativeManager);
129                    }, DELAY_AFTER_CLOSE);
130                });
131            }
132
133            return slot.refresh();
134        }).catch(function (error) {
135            isRenderInProgress = false;
136           window.console.warn('[E1 desktop sticky] Failed to render', error);
137        });
138    }
139
140    function observeFooterVisibility(creativeManager) {
141        var footer = document.querySelector(FOOTER_SELECTOR);
142
143        if (!footer || typeof IntersectionObserver !== 'function') {
144            return;
145        }
146
147        if (footerObserver) {
148            footerObserver.disconnect();
149        }
150
151        footerObserver = new IntersectionObserver(function (entries) {
152            var entry = entries[0];
153
154            if (!entry) {
155                return;
156            }
157
158            footerInViewport = entry.isIntersecting;
159
160            if (footerInViewport) {
161                renderAttemptId += 1;
162                isRenderInProgress = false;

163                clearRerenderTimeout();
164                if (currentSlot) {
165                    destroyDesktopSticky(creativeManager, currentSlot);
166                }
167
168                return;
169            }
170
171            if (!currentSlot) {
172                renderDesktopSticky(creativeManager);
173            }
174        }, {
175            threshold: 0
176        });
177
178        footerObserver.observe(footer);
179    }
180
181    function initDesktopSticky() {
182        window.onHSMCreativeManagerReady.push(function (creativeManager) {
183            if (creativeManager.stickyRsya) { 
184                creativeManager.stickyRsya.setzIndex(STICKY_Z_INDEX);
185                creativeManager.stickyRsya.setIsShrinkWrapper(true);
186            }
187
188            observeFooterVisibility(creativeManager);
189            renderDesktopSticky(creativeManager);
190        });
191    }
192
193    if (!window.isMobile && window.screen.width > 1263) {
194        initDesktopSticky();
195    }
196})();