, but this code // executes before the first paint, when

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is not yet present. The // classes are added to so styling immediately reflects the current // toolbar state. The classes are removed after the toolbar completes // initialization. const classesToAdd = ['toolbar-loading', 'toolbar-anti-flicker']; if (toolbarState) { const { orientation, hasActiveTab, isFixed, activeTray, activeTabId, isOriented, userButtonMinWidth } = toolbarState; classesToAdd.push( orientation ? `toolbar-` + orientation + `` : 'toolbar-horizontal', ); if (hasActiveTab !== false) { classesToAdd.push('toolbar-tray-open'); } if (isFixed) { classesToAdd.push('toolbar-fixed'); } if (isOriented) { classesToAdd.push('toolbar-oriented'); } if (activeTray) { // These styles are added so the active tab/tray styles are present // immediately instead of "flickering" on as the toolbar initializes. In // instances where a tray is lazy loaded, these styles facilitate the // lazy loaded tray appearing gracefully and without reflow. const styleContent = ` .toolbar-loading #` + activeTabId + ` { background-image: linear-gradient(rgba(255, 255, 255, 0.25) 20%, transparent 200%); } .toolbar-loading #` + activeTabId + `-tray { display: block; box-shadow: -1px 0 5px 2px rgb(0 0 0 / 33%); border-right: 1px solid #aaa; background-color: #f5f5f5; z-index: 0; } .toolbar-loading.toolbar-vertical.toolbar-tray-open #` + activeTabId + `-tray { width: 15rem; height: 100vh; } .toolbar-loading.toolbar-horizontal :not(#` + activeTray + `) > .toolbar-lining {opacity: 0}`; const style = document.createElement('style'); style.textContent = styleContent; style.setAttribute('data-toolbar-anti-flicker-loading', true); document.querySelector('head').appendChild(style); if (userButtonMinWidth) { const userButtonStyle = document.createElement('style'); userButtonStyle.textContent = `#toolbar-item-user {min-width: ` + userButtonMinWidth +`px;}` document.querySelector('head').appendChild(userButtonStyle); } } } document.querySelector('html').classList.add(...classesToAdd); })(); Remembering Jack - News & Stories | 黄大仙高手论坛

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Spark

Remembering Jack

Fri, Sep 01, 2017

The notice of professor Jack Wiersma鈥檚 death in the Spark (summer 2017) brought back some very fond memories. Jack Wiersma was my grade eight teacher at East Edmonton (Alberta) Christian School in 1960. He was the first teacher I ever had who inspired me to learn. I remember that Jack brought his own microscope to school and through it I first saw live amoebas and paramecia. In 1967, with the echo of Jack鈥檚 enthusiastic teaching still in my memory, I graduated from the University of Alberta with a degree in biology. Jack鈥檚 exemplary teaching also motivated me to want to become a teacher. After a number of years of classroom teaching and a doctorate in education, I became an assistant professor of education at The King鈥檚 College (now University) in Edmonton. I will miss Jack Wiersma, who will certainly be warmly welcomed into eternity by our Lord with a resounding 鈥渨ell done, good and faithful servant.鈥

-Bob Bruinsma
Edmonton, Alberta