Mercurial > libervia-web
view libervia/web/pages/_browser/slideshow.py @ 1543:f00497c00e38
pages (chat): fix `own_jid` exposure:
`own_jid` is a `JID` instance, and must be casted to str to be exposed.
author | Goffi <goffi@goffi.org> |
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date | Thu, 06 Jul 2023 12:05:48 +0200 |
parents | eb00d593801d |
children | 860e33127245 |
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from browser import document, window, html, timer, DOMNode from js_modules.swiper import Swiper from template import Template class SlideShow: def __init__(self): self.swiper = None slideshow_tpl = Template('photo/slideshow.html') self.slideshow_elt = slideshow_tpl.get_elt() self.comments_count_elt = self.slideshow_elt.select_one('.comments__count') self.wrapper = self.slideshow_elt.select_one(".swiper-wrapper") self.hidden_elts = {} self.control_hidden = False self.click_timer = None self._class_to_remove = set() self._exit_callback = None @property def current_slide(self): if self.swiper is None: return None try: return DOMNode(self.swiper.slides[self.swiper.realIndex]) # getting missing item in JS arrays returns KeyError except KeyError: return None @property def current_item(self): """item attached to the current slide, if any""" current = self.current_slide if current is None: return None try: return current._item except AttributeError: return None @property def current_options(self): """options attached to the current slide, if any""" current = self.current_slide if current is None: return None try: return current._options except AttributeError: return None @property def index(self): if self.swiper is None: return None return self.swiper.realIndex @index.setter def index(self, idx): if self.swiper is not None: self.swiper.slideTo(idx, 0) def attach(self): # we hide other elts to avoid scrolling issues for elt in document.body.children: try: self.hidden_elts[elt] = elt.style.display except AttributeError: pass # FIXME: this is a workaround needed because Brython's children method # is returning all nodes, # cf. https://github.com/brython-dev/brython/issues/1657 # to be removed when Brython is fixed. else: elt.style.display = "none" document.body <= self.slideshow_elt self.swiper = Swiper.new( ".swiper-container", { # default 0 value results in lot of accidental swipes, notably when media # player is used "threshold": 10, "pagination": { "el": ".swiper-pagination", }, "navigation": { "nextEl": ".swiper-button-next", "prevEl": ".swiper-button-prev", }, "scrollbar": { "el": ".swiper-scrollbar", }, "grabCursor": True, "keyboard": { "enabled": True, "onlyInViewport": False, }, "mousewheel": True, "zoom": { "maxRatio": 15, "toggle": False, }, } ) window.addEventListener("keydown", self.on_key_down, True) self.slideshow_elt.select_one(".click_to_close").bind("click", self.on_close) self.slideshow_elt.select_one(".click_to_comment").bind("click", self.on_comment) # we don't use swiper.on for "click" and "dblclick" (or "doubleTap" in swiper # terms) because it breaks event propagation management, which cause trouble with # media player self.slideshow_elt.bind("click", self.on_click) self.slideshow_elt.bind("dblclick", self.on_dblclick) self.swiper.on("slideChange", self.on_slide_change) self.on_slide_change(self.swiper) self.fullscreen(True) def add_slide(self, elt, item_data=None, options=None): slide_elt = html.DIV(Class="swiper-slide") zoom_cont_elt = html.DIV(Class="swiper-zoom-container") slide_elt <= zoom_cont_elt zoom_cont_elt <= elt slide_elt._item = item_data if options is not None: slide_elt._options = options self.swiper.appendSlide([slide_elt]) self.swiper.update() def quit(self): # we unhide for elt, display in self.hidden_elts.items(): elt.style.display = display self.hidden_elts.clear() self.slideshow_elt.remove() self.slideshow_elt = None self.swiper.destroy(True, True) self.swiper = None def fullscreen(self, active=None): """Activate/desactivate fullscreen @param acvite: can be: - True to activate - False to desactivate - Auto to switch fullscreen mode """ try: fullscreen_elt = document.fullscreenElement request_fullscreen = self.slideshow_elt.requestFullscreen except AttributeError: print("fullscreen is not available on this browser") else: if active is None: active = fullscreen_elt == None if active: request_fullscreen() else: try: document.exitFullscreen() except AttributeError: print("exitFullscreen not available on this browser") def on_key_down(self, evt): if evt.key == 'Escape': self.quit() else: return evt.preventDefault() def on_slide_change(self, swiper): if self._exit_callback is not None: self._exit_callback() self._exit_callback = None item = self.current_item if item is not None: comments_count = item.get('comments_count') self.comments_count_elt.text = comments_count or '' for cls in self._class_to_remove: self.slideshow_elt.classList.remove(cls) self._class_to_remove.clear() options = self.current_options if options is not None: for flag in options.get('flags', []): cls = f"flag_{flag.lower()}" self.slideshow_elt.classList.add(cls) self._class_to_remove.add(cls) self._exit_callback = options.get("exit_callback", None) def toggle_hide_controls(self, evt): self.click_timer = None # we don't want to hide controls when a control is clicked # so we check all ancestors if we are not in a control current = evt.target while current and current != self.slideshow_elt: print(f"current: {current}") if 'slideshow_control' in current.classList: return current = current.parent for elt in self.slideshow_elt.select('.slideshow_control'): elt.style.display = '' if self.control_hidden else 'none' self.control_hidden = not self.control_hidden def on_click(self, evt): evt.stopPropagation() evt.preventDefault() # we use a timer so double tap can cancel the click # this avoid double tap side effect if self.click_timer is None: self.click_timer = timer.set_timeout( lambda: self.toggle_hide_controls(evt), 300) def on_dblclick(self, evt): evt.stopPropagation() evt.preventDefault() if self.click_timer is not None: timer.clear_timeout(self.click_timer) self.click_timer = None if self.swiper.zoom.scale != 1: self.swiper.zoom.toggle() else: # "in" is reserved in Python, so we call it using dict syntax self.swiper.zoom["in"]() def on_close(self, evt): evt.stopPropagation() evt.preventDefault() self.quit() def on_comment_close(self, evt): evt.stopPropagation() side_panel = self.comments_panel_elt.select_one('.comments_side_panel') side_panel.classList.remove('open') side_panel.bind("transitionend", lambda evt: self.comments_panel_elt.remove()) def on_comments_panel_click(self, evt): # we stop stop propagation to avoid the closing of the panel evt.stopPropagation() def on_comment(self, evt): item = self.current_item if item is None: return comments_panel_tpl = Template('blog/comments_panel.html') try: comments = item['comments']['items'] except KeyError: comments = [] self.comments_panel_elt = comments_panel_tpl.get_elt({ "comments": comments, "comments_service": item['comments_service'], "comments_node": item['comments_node'], }) self.slideshow_elt <= self.comments_panel_elt side_panel = self.comments_panel_elt.select_one('.comments_side_panel') timer.set_timeout(lambda: side_panel.classList.add("open"), 0) for close_elt in self.comments_panel_elt.select('.click_to_close'): close_elt.bind("click", self.on_comment_close) side_panel.bind("click", self.on_comments_panel_click)