January 2012
Intermediate to advanced
584 pages
11h 56m
Chinese
Content preview from 操作介面設計模式 第二版
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模式
|
383
其他詞典
http://quince.infragistics.com/Patterns/Drop%20Down%20Chooser.aspx
各位也可以上網搜尋特定的下拉式選擇器，例如色彩選擇器、日期選擇器或日曆、
字型選擇器、數字滑桿等等。
清單建構器（
List Builder
）
圖
8
-
31
Microsoft Outlook
裡的對話框
這是什麼
在同一個頁面顯示「來源」清單與「目的地」清單；讓使用者可透過按鈕或拖放動
作，在這兩個清單間移動項目。
何時使用
在要求使用者建立一份項目清單時，使用者可以從另一個清單中選擇項目。來源清
單可能很長 — 太長了，而無法用幾個勾選方塊簡單地處理。
為何使用
此模式的關鍵是在同一個頁面中顯示兩份清單。使用者可以清楚地看見一切，或許
就不需在情境對話框中跳進跳出。
清單建構器有一個 較簡單的替 代方法，就 是改用一份 都是「勾選 方塊項目」 的清
單。兩者都能解決「如何選取一個次集合」的問題。但是如果你的來源清單相當龐
大（例如整個檔案系統），一份勾選方塊清單將無法因應這麼大的規模 — 使用者
無法很輕易地看到有哪些項目被選取了，對於自己所選取的項目因而無法有很清楚
的概念；使用者必須來回捲動才能看到所有被選取的項目。
DI_2e_ch08.indd 383 2012/1/5 下午 03:28:27
384
|
第八章
原理作法
將來源清單與目的地清單並置，由左邊的來源移向右邊的目的地，或是由上面移到
下面都可以。在這兩個清單的中間，放置「增加」和「移
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.