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快速入門:新增頁面控制項 (HTML)

[ 本文的目標對象是撰寫 Windows 執行階段 App 的 Windows 8.x 和 Windows Phone 8.x 開發人員。如果您正在開發適用於 Windows 10 的 App,請參閱 最新文件 ]

了解如何建立和顯示 PageControl 物件。

先決條件

我們假設您可以利用 JavaScript,以適用於 JavaScript 的 Windows Library 控制項建立基本的 Windows 市集應用程式。如需開始使用 WinJS 控制項的指示,請參閱快速入門:新增 WinJS 控制項與樣式

建立 PageControl

與其他適用於 JavaScript 的 Windows Library 不同的是,您不會直接具現化 PageControl。相反地,您會呼叫 WinJS.UI.Pages.define 方法,並將用於定義 PageControl HTML 檔案的統一資源識別元 (URI) 以及用於定義 PageControl 成員的物件傳遞給它,進而建立 PageControl

以下是 PageControl 定義的範例。它是由三個檔案組成:HTML 檔案、CSS 檔案及 JavaScript 檔案。


<!-- samplePageControl.html -->
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>samplePageControl</title>

    <!-- WinJS references -->
    <link href="/pages/samplePageControl.css" rel="stylesheet">
    <script src="/pages/samplePageControl.js"></script>
</head>
<body>
    <div class="samplePageControl">
        <p class="samplePageControl-text"><span data-win-bind="textContent: controlText">Message goes here</span>
        <button class="samplePageControl-button">Click me</button></p>
        <p>Page controls can also contain WinJS controls. They are activated automatically.</p>
        <div class="samplePageControl-toggle" data-win-control="WinJS.UI.ToggleSwitch"></div>
    </div>
</body>
</html>

/* samplePageControl.css */
.samplePageControl
{
    padding: 5px;
    border: 4px dashed #999999;
}

// samplePageControl.js
(function () {
    "use strict";

    var ControlConstructor = WinJS.UI.Pages.define("/pages/samplePageControl.html", {
        // This function is called after the page control contents
        // have been loaded, controls have been activated, and
        // the resulting elements have been parented to the DOM.
        ready: function (element, options) {
            options = options || {};
            this._data = WinJS.Binding.as({ controlText: options.controlText, message: options.message });

            // Data bind to the child tree to set the control text
            WinJS.Binding.processAll(element, this._data);

            // Hook up the click handler on our button
            WinJS.Utilities.query("button", element).listen("click",
                // JavaScript gotcha - use function.bind to make sure the this reference
                // inside the event callback points to the control object, not to
                // window
                this._onclick.bind(this));

            // WinJS controls can be manipulated via code in the page control too
            WinJS.Utilities.query(".samplePageControl-toggle", element).listen("change",
                this._ontoggle.bind(this));
        },

        // Getter/setter for the controlText property.
        controlText: {
            get: function () { return this._data.controlText; },
            set: function (value) { this._data.controlText = value; }
        },

        // Event handler that was wired up in the ready method
        _onclick: function (evt) {
            WinJS.log && WinJS.log(this._data.message + " button was clicked", "sample", "status");
        },

        // Event handler for when the toggle control switches
        _ontoggle: function (evt) {
            var toggleControl = evt.target.winControl;
            WinJS.log && WinJS.log(this._data.message + " toggle is now " + toggleControl.checked, "sample", "status");
        }
    });

    // The following lines expose this control constructor as a global.
    // This lets you use the control as a declarative control inside the
    // data-win-control attribute.

    WinJS.Namespace.define("Controls_PageControls", {
        SamplePageControl: ControlConstructor
    });
})();

如果要在 Microsoft Visual Studio 中建立頁面控制項,請從主功能表選取 [專案] > [加入新項目],然後選取 [頁面控制項]****。

顯示 PageControl

定義 PageControl 之後,您可以使用數種方法顯示它:

  • 使用 WinJS.UI.Pages.render 函式。

    <div class="renderingPageControls-renderedControl"></div>
    
    // Render the page control via a call to WinJS.UI.Pages.render. This lets
    // you render a page control by referencing it via a url.
    var renderHost = element.querySelector(".renderingPageControls-renderedControl");
    WinJS.UI.Pages.render("/pages/SamplePageControl.html", renderHost, {
        controlText: "This control created by calling WinJS.UI.Pages.render",
        message: "Render control"
    }).done();
    
  • 公開 PageControl 物件的建構函式,然後用它來建立 PageControl

    <div class="renderingPageControls-createdProgrammatically"></div>
    
    // Render the page control by creating the control.
    var constructedHost = element.querySelector(".renderingPageControls-createdProgrammatically");
    new Controls_PageControls.SamplePageControl(constructedHost, {
        controlText: "This control created by calling the constructor directly",
        message: "Constructed control"
    });
    
  • 使用 WinJS.UI.Pages.get 函式取得 PageControl 的建構函式。

  • 具現化 HTML 中的控制項,就像適用於 Javascript 的 Windows Library 控制項一樣 (它的確是)。您必須公開 PageControl 物件的建構函式才能進行這個動作。

    <div data-win-control="Controls_PageControls.SamplePageControl"
        data-win-options="{controlText: 'This was created declaratively', message: 'Declarative control' }">
    </div>
    
  • 使用 HtmlControl 轉譯頁面。

     <div class="renderingPageControls-htmlControl" data-win-control="WinJS.UI.HtmlControl"
        data-win-options="{uri: '/pages/samplePageControl.html',
        controlText: 'This was rendered via the HtmlControl', 
        message: 'HTML Control loaded control' }"></div>
    

摘要與後續步驟

您已了解如何建立和顯示 PageControl 物件。

如需如何使用 PageControl 物件的詳細資訊,請參閱快速入門:使用單頁瀏覽