| 1 | dojo.provide("dojox.flash._base"); |
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| 2 | dojo.experimental("dojox.flash"); |
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| 3 | |
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| 4 | // for dojo.window.getBox(), needed by dojox.flash.Embed.center() |
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| 5 | dojo.require("dojo.window"); |
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| 6 | |
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| 7 | dojox.flash = function(){ |
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| 8 | // summary: |
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| 9 | // Utilities to embed and communicate with the Flash player from Javascript |
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| 10 | // |
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| 11 | // description: |
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| 12 | // The goal of dojox.flash is to make it easy to extend Flash's capabilities |
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| 13 | // into an Ajax/DHTML environment. |
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| 14 | // |
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| 15 | // dojox.flash provides an easy object for interacting with the Flash plugin. |
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| 16 | // This object provides methods to determine the current version of the Flash |
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| 17 | // plugin (dojox.flash.info); write out the necessary markup to |
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| 18 | // dynamically insert a Flash object into the page (dojox.flash.Embed; and |
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| 19 | // do dynamic installation and upgrading of the current Flash plugin in |
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| 20 | // use (dojox.flash.Install). If you want to call methods on the Flash object |
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| 21 | // embedded into the page it is your responsibility to use Flash's ExternalInterface |
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| 22 | // API and get a reference to the Flash object yourself. |
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| 23 | // |
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| 24 | // To use dojox.flash, you must first wait until Flash is finished loading |
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| 25 | // and initializing before you attempt communication or interaction. |
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| 26 | // To know when Flash is finished use dojo.connect: |
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| 27 | // |
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| 28 | //| dojo.connect(dojox.flash, "loaded", myInstance, "myCallback"); |
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| 29 | // |
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| 30 | // Then, while the page is still loading provide the file name: |
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| 31 | // |
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| 32 | //| dojox.flash.setSwf(dojo.moduleUrl("dojox", "_storage/storage.swf")); |
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| 33 | // |
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| 34 | // If no SWF files are specified, then Flash is not initialized. |
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| 35 | // |
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| 36 | // Your Flash must use Flash's ExternalInterface to expose Flash methods and |
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| 37 | // to call JavaScript. |
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| 38 | // |
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| 39 | // setSwf can take an optional 'visible' attribute to control whether |
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| 40 | // the Flash object is visible or not on the page; the default is visible: |
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| 41 | // |
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| 42 | //| dojox.flash.setSwf(dojo.moduleUrl("dojox", "_storage/storage.swf"), |
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| 43 | // false); |
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| 44 | // |
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| 45 | // Once finished, you can query Flash version information: |
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| 46 | // |
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| 47 | //| dojox.flash.info.version |
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| 48 | // |
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| 49 | // Or can communicate with Flash methods that were exposed: |
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| 50 | // |
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| 51 | //| var f = dojox.flash.get(); |
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| 52 | //| var results = f.sayHello("Some Message"); |
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| 53 | // |
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| 54 | // Your Flash files should use DojoExternalInterface.as to register methods; |
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| 55 | // this file wraps Flash's normal ExternalInterface but correct various |
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| 56 | // serialization bugs that ExternalInterface has. |
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| 57 | // |
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| 58 | // Note that dojox.flash is not meant to be a generic Flash embedding |
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| 59 | // mechanism; it is as generic as necessary to make Dojo Storage's |
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| 60 | // Flash Storage Provider as clean and modular as possible. If you want |
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| 61 | // a generic Flash embed mechanism see [SWFObject](http://blog.deconcept.com/swfobject/). |
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| 62 | // |
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| 63 | // Notes: |
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| 64 | // Note that dojox.flash can currently only work with one Flash object |
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| 65 | // on the page; it does not yet support multiple Flash objects on |
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| 66 | // the same page. |
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| 67 | // |
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| 68 | // Your code can detect whether the Flash player is installing or having |
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| 69 | // its version revved in two ways. First, if dojox.flash detects that |
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| 70 | // Flash installation needs to occur, it sets dojox.flash.info.installing |
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| 71 | // to true. Second, you can detect if installation is necessary with the |
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| 72 | // following callback: |
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| 73 | // |
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| 74 | //| dojo.connect(dojox.flash, "installing", myInstance, "myCallback"); |
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| 75 | // |
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| 76 | // You can use this callback to delay further actions that might need Flash; |
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| 77 | // when installation is finished the full page will be refreshed and the |
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| 78 | // user will be placed back on your page with Flash installed. |
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| 79 | // |
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| 80 | // ------------------- |
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| 81 | // Todo/Known Issues |
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| 82 | // ------------------- |
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| 83 | // |
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| 84 | // * On Internet Explorer, after doing a basic install, the page is |
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| 85 | // not refreshed or does not detect that Flash is now available. The way |
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| 86 | // to fix this is to create a custom small Flash file that is pointed to |
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| 87 | // during installation; when it is finished loading, it does a callback |
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| 88 | // that says that Flash installation is complete on IE, and we can proceed |
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| 89 | // to initialize the dojox.flash subsystem. |
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| 90 | // * Things aren't super tested for sending complex objects to Flash |
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| 91 | // methods, since Dojo Storage only needs strings |
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| 92 | // |
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| 93 | // Author- Brad Neuberg, http://codinginparadise.org |
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| 94 | } |
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| 95 | |
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| 96 | dojox.flash = { |
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| 97 | ready: false, |
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| 98 | url: null, |
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| 99 | |
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| 100 | _visible: true, |
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| 101 | _loadedListeners: [], |
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| 102 | _installingListeners: [], |
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| 103 | |
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| 104 | setSwf: function(/* String */ url, /* boolean? */ visible){ |
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| 105 | // summary: Sets the SWF files and versions we are using. |
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| 106 | // url: String |
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| 107 | // The URL to this Flash file. |
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| 108 | // visible: boolean? |
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| 109 | // Whether the Flash file is visible or not. If it is not visible we hide |
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| 110 | // it off the screen. This defaults to true (i.e. the Flash file is |
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| 111 | // visible). |
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| 112 | this.url = url; |
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| 113 | |
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| 114 | this._visible = true; |
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| 115 | if(visible !== null && visible !== undefined){ |
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| 116 | this._visible = visible; |
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| 117 | } |
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| 118 | |
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| 119 | // initialize ourselves |
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| 120 | this._initialize(); |
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| 121 | }, |
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| 122 | |
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| 123 | addLoadedListener: function(/* Function */ listener){ |
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| 124 | // summary: |
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| 125 | // Adds a listener to know when Flash is finished loading. |
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| 126 | // Useful if you don't want a dependency on dojo.event. |
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| 127 | // listener: Function |
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| 128 | // A function that will be called when Flash is done loading. |
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| 129 | |
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| 130 | this._loadedListeners.push(listener); |
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| 131 | }, |
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| 132 | |
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| 133 | addInstallingListener: function(/* Function */ listener){ |
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| 134 | // summary: |
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| 135 | // Adds a listener to know if Flash is being installed. |
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| 136 | // Useful if you don't want a dependency on dojo.event. |
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| 137 | // listener: Function |
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| 138 | // A function that will be called if Flash is being |
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| 139 | // installed |
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| 140 | |
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| 141 | this._installingListeners.push(listener); |
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| 142 | }, |
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| 143 | |
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| 144 | loaded: function(){ |
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| 145 | // summary: Called back when the Flash subsystem is finished loading. |
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| 146 | // description: |
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| 147 | // A callback when the Flash subsystem is finished loading and can be |
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| 148 | // worked with. To be notified when Flash is finished loading, add a |
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| 149 | // loaded listener: |
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| 150 | // |
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| 151 | // dojox.flash.addLoadedListener(loadedListener); |
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| 152 | |
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| 153 | dojox.flash.ready = true; |
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| 154 | if(dojox.flash._loadedListeners.length){ // FIXME: redundant if? use forEach? |
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| 155 | for(var i = 0;i < dojox.flash._loadedListeners.length; i++){ |
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| 156 | dojox.flash._loadedListeners[i].call(null); |
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| 157 | } |
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| 158 | } |
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| 159 | }, |
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| 160 | |
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| 161 | installing: function(){ |
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| 162 | // summary: Called if Flash is being installed. |
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| 163 | // description: |
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| 164 | // A callback to know if Flash is currently being installed or |
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| 165 | // having its version revved. To be notified if Flash is installing, connect |
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| 166 | // your callback to this method using the following: |
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| 167 | // |
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| 168 | // dojo.event.connect(dojox.flash, "installing", myInstance, "myCallback"); |
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| 169 | |
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| 170 | if(dojox.flash._installingListeners.length){ // FIXME: redundant if? use forEach? |
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| 171 | for(var i = 0; i < dojox.flash._installingListeners.length; i++){ |
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| 172 | dojox.flash._installingListeners[i].call(null); |
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| 173 | } |
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| 174 | } |
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| 175 | }, |
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| 176 | |
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| 177 | // Initializes dojox.flash. |
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| 178 | _initialize: function(){ |
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| 179 | //console.debug("dojox.flash._initialize"); |
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| 180 | // see if we need to rev or install Flash on this platform |
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| 181 | var installer = new dojox.flash.Install(); |
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| 182 | dojox.flash.installer = installer; |
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| 183 | |
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| 184 | if(installer.needed()){ |
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| 185 | installer.install(); |
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| 186 | }else{ |
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| 187 | // write the flash object into the page |
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| 188 | dojox.flash.obj = new dojox.flash.Embed(this._visible); |
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| 189 | dojox.flash.obj.write(); |
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| 190 | |
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| 191 | // setup the communicator |
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| 192 | dojox.flash.comm = new dojox.flash.Communicator(); |
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| 193 | } |
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| 194 | } |
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| 195 | }; |
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| 196 | |
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| 197 | |
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| 198 | dojox.flash.Info = function(){ |
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| 199 | // summary: A class that helps us determine whether Flash is available. |
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| 200 | // description: |
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| 201 | // A class that helps us determine whether Flash is available, |
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| 202 | // it's major and minor versions, and what Flash version features should |
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| 203 | // be used for Flash/JavaScript communication. Parts of this code |
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| 204 | // are adapted from the automatic Flash plugin detection code autogenerated |
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| 205 | // by the Macromedia Flash 8 authoring environment. |
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| 206 | // |
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| 207 | // An instance of this class can be accessed on dojox.flash.info after |
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| 208 | // the page is finished loading. |
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| 209 | |
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| 210 | this._detectVersion(); |
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| 211 | } |
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| 212 | |
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| 213 | dojox.flash.Info.prototype = { |
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| 214 | // version: String |
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| 215 | // The full version string, such as "8r22". |
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| 216 | version: -1, |
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| 217 | |
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| 218 | // versionMajor, versionMinor, versionRevision: String |
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| 219 | // The major, minor, and revisions of the plugin. For example, if the |
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| 220 | // plugin is 8r22, then the major version is 8, the minor version is 0, |
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| 221 | // and the revision is 22. |
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| 222 | versionMajor: -1, |
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| 223 | versionMinor: -1, |
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| 224 | versionRevision: -1, |
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| 225 | |
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| 226 | // capable: Boolean |
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| 227 | // Whether this platform has Flash already installed. |
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| 228 | capable: false, |
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| 229 | |
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| 230 | // installing: Boolean |
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| 231 | // Set if we are in the middle of a Flash installation session. |
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| 232 | installing: false, |
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| 233 | |
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| 234 | isVersionOrAbove: function( |
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| 235 | /* int */ reqMajorVer, |
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| 236 | /* int */ reqMinorVer, |
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| 237 | /* int */ reqVer){ /* Boolean */ |
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| 238 | // summary: |
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| 239 | // Asserts that this environment has the given major, minor, and revision |
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| 240 | // numbers for the Flash player. |
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| 241 | // description: |
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| 242 | // Asserts that this environment has the given major, minor, and revision |
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| 243 | // numbers for the Flash player. |
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| 244 | // |
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| 245 | // Example- To test for Flash Player 7r14: |
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| 246 | // |
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| 247 | // dojox.flash.info.isVersionOrAbove(7, 0, 14) |
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| 248 | // returns: |
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| 249 | // Returns true if the player is equal |
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| 250 | // or above the given version, false otherwise. |
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| 251 | |
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| 252 | // make the revision a decimal (i.e. transform revision 14 into |
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| 253 | // 0.14 |
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| 254 | reqVer = parseFloat("." + reqVer); |
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| 255 | |
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| 256 | if(this.versionMajor >= reqMajorVer && this.versionMinor >= reqMinorVer |
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| 257 | && this.versionRevision >= reqVer){ |
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| 258 | return true; |
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| 259 | }else{ |
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| 260 | return false; |
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| 261 | } |
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| 262 | }, |
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| 263 | |
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| 264 | _detectVersion: function(){ |
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| 265 | var versionStr; |
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| 266 | |
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| 267 | // loop backwards through the versions until we find the newest version |
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| 268 | for(var testVersion = 25; testVersion > 0; testVersion--){ |
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| 269 | if(dojo.isIE){ |
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| 270 | var axo; |
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| 271 | try{ |
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| 272 | if(testVersion > 6){ |
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| 273 | axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash." |
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| 274 | + testVersion); |
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| 275 | }else{ |
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| 276 | axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash"); |
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| 277 | } |
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| 278 | if(typeof axo == "object"){ |
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| 279 | if(testVersion == 6){ |
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| 280 | axo.AllowScriptAccess = "always"; |
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| 281 | } |
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| 282 | versionStr = axo.GetVariable("$version"); |
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| 283 | } |
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| 284 | }catch(e){ |
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| 285 | continue; |
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| 286 | } |
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| 287 | }else{ |
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| 288 | versionStr = this._JSFlashInfo(testVersion); |
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| 289 | } |
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| 290 | |
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| 291 | if(versionStr == -1 ){ |
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| 292 | this.capable = false; |
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| 293 | return; |
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| 294 | }else if(versionStr != 0){ |
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| 295 | var versionArray; |
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| 296 | if(dojo.isIE){ |
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| 297 | var tempArray = versionStr.split(" "); |
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| 298 | var tempString = tempArray[1]; |
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| 299 | versionArray = tempString.split(","); |
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| 300 | }else{ |
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| 301 | versionArray = versionStr.split("."); |
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| 302 | } |
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| 303 | |
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| 304 | this.versionMajor = versionArray[0]; |
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| 305 | this.versionMinor = versionArray[1]; |
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| 306 | this.versionRevision = versionArray[2]; |
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| 307 | |
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| 308 | // 7.0r24 == 7.24 |
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| 309 | var versionString = this.versionMajor + "." + this.versionRevision; |
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| 310 | this.version = parseFloat(versionString); |
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| 311 | |
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| 312 | this.capable = true; |
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| 313 | |
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| 314 | break; |
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| 315 | } |
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| 316 | } |
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| 317 | }, |
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| 318 | |
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| 319 | // JavaScript helper required to detect Flash Player PlugIn version |
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| 320 | // information. Internet Explorer uses a corresponding Visual Basic |
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| 321 | // version to interact with the Flash ActiveX control. |
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| 322 | _JSFlashInfo: function(testVersion){ |
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| 323 | // NS/Opera version >= 3 check for Flash plugin in plugin array |
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| 324 | if(navigator.plugins != null && navigator.plugins.length > 0){ |
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| 325 | if(navigator.plugins["Shockwave Flash 2.0"] || |
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| 326 | navigator.plugins["Shockwave Flash"]){ |
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| 327 | var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : ""; |
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| 328 | var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description; |
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| 329 | var descArray = flashDescription.split(" "); |
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| 330 | var tempArrayMajor = descArray[2].split("."); |
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| 331 | var versionMajor = tempArrayMajor[0]; |
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| 332 | var versionMinor = tempArrayMajor[1]; |
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| 333 | var tempArrayMinor = (descArray[3] || descArray[4]).split("r"); |
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| 334 | var versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0; |
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| 335 | var version = versionMajor + "." + versionMinor + "." + versionRevision; |
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| 336 | |
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| 337 | return version; |
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| 338 | } |
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| 339 | } |
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| 340 | |
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| 341 | return -1; |
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| 342 | } |
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| 343 | }; |
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| 344 | |
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| 345 | dojox.flash.Embed = function(visible){ |
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| 346 | // summary: A class that is used to write out the Flash object into the page. |
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| 347 | // description: |
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| 348 | // Writes out the necessary tags to embed a Flash file into the page. Note that |
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| 349 | // these tags are written out as the page is loaded using document.write, so |
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| 350 | // you must call this class before the page has finished loading. |
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| 351 | |
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| 352 | this._visible = visible; |
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| 353 | } |
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| 354 | |
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| 355 | dojox.flash.Embed.prototype = { |
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| 356 | // width: int |
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| 357 | // The width of this Flash applet. The default is the minimal width |
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| 358 | // necessary to show the Flash settings dialog. Current value is |
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| 359 | // 215 pixels. |
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| 360 | width: 215, |
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| 361 | |
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| 362 | // height: int |
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| 363 | // The height of this Flash applet. The default is the minimal height |
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| 364 | // necessary to show the Flash settings dialog. Current value is |
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| 365 | // 138 pixels. |
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| 366 | height: 138, |
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| 367 | |
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| 368 | // id: String |
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| 369 | // The id of the Flash object. Current value is 'flashObject'. |
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| 370 | id: "flashObject", |
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| 371 | |
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| 372 | // Controls whether this is a visible Flash applet or not. |
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| 373 | _visible: true, |
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| 374 | |
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| 375 | protocol: function(){ |
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| 376 | switch(window.location.protocol){ |
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| 377 | case "https:": |
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| 378 | return "https"; |
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| 379 | break; |
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| 380 | default: |
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| 381 | return "http"; |
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| 382 | break; |
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| 383 | } |
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| 384 | }, |
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| 385 | |
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| 386 | write: function(/* Boolean? */ doExpressInstall){ |
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| 387 | // summary: Writes the Flash into the page. |
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| 388 | // description: |
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| 389 | // This must be called before the page |
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| 390 | // is finished loading. |
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| 391 | // doExpressInstall: Boolean |
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| 392 | // Whether to write out Express Install |
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| 393 | // information. Optional value; defaults to false. |
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| 394 | |
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| 395 | // figure out the SWF file to get and how to write out the correct HTML |
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| 396 | // for this Flash version |
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| 397 | var objectHTML; |
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| 398 | var swfloc = dojox.flash.url; |
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| 399 | var swflocObject = swfloc; |
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| 400 | var swflocEmbed = swfloc; |
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| 401 | var dojoUrl = dojo.baseUrl; |
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| 402 | var xdomainBase = document.location.protocol + '//' + document.location.host; |
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| 403 | if(doExpressInstall){ |
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| 404 | // the location to redirect to after installing |
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| 405 | var redirectURL = escape(window.location); |
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| 406 | document.title = document.title.slice(0, 47) + " - Flash Player Installation"; |
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| 407 | var docTitle = escape(document.title); |
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| 408 | swflocObject += "?MMredirectURL=" + redirectURL |
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| 409 | + "&MMplayerType=ActiveX" |
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| 410 | + "&MMdoctitle=" + docTitle |
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| 411 | + "&baseUrl=" + escape(dojoUrl) |
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| 412 | + "&xdomain=" + escape(xdomainBase); |
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| 413 | swflocEmbed += "?MMredirectURL=" + redirectURL |
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| 414 | + "&MMplayerType=PlugIn" |
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| 415 | + "&baseUrl=" + escape(dojoUrl) |
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| 416 | + "&xdomain=" + escape(xdomainBase); |
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| 417 | }else{ |
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| 418 | // IE/Flash has an evil bug that shows up some time: if we load the |
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| 419 | // Flash and it isn't in the cache, ExternalInterface works fine -- |
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| 420 | // however, the second time when its loaded from the cache a timing |
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| 421 | // bug can keep ExternalInterface from working. The trick below |
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| 422 | // simply invalidates the Flash object in the cache all the time to |
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| 423 | // keep it loading fresh. -- Brad Neuberg |
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| 424 | swflocObject += "?cachebust=" + new Date().getTime(); |
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| 425 | swflocObject += "&baseUrl=" + escape(dojoUrl); |
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| 426 | swflocObject += "&xdomain=" + escape(xdomainBase); |
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| 427 | } |
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| 428 | |
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| 429 | if(swflocEmbed.indexOf("?") == -1){ |
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| 430 | swflocEmbed += '?baseUrl='+escape(dojoUrl); |
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| 431 | }else{ |
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| 432 | swflocEmbed += '&baseUrl='+escape(dojoUrl); |
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| 433 | } |
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| 434 | swflocEmbed += '&xdomain='+escape(xdomainBase); |
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| 435 | |
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| 436 | objectHTML = |
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| 437 | '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" ' |
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| 438 | + 'codebase="' |
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| 439 | + this.protocol() |
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| 440 | + '://fpdownload.macromedia.com/pub/shockwave/cabs/flash/' |
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| 441 | + 'swflash.cab#version=8,0,0,0"\n ' |
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| 442 | + 'width="' + this.width + '"\n ' |
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| 443 | + 'height="' + this.height + '"\n ' |
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| 444 | + 'id="' + this.id + '"\n ' |
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| 445 | + 'name="' + this.id + '"\n ' |
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| 446 | + 'align="middle">\n ' |
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| 447 | + '<param name="allowScriptAccess" value="always"></param>\n ' |
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| 448 | + '<param name="movie" value="' + swflocObject + '"></param>\n ' |
|---|
| 449 | + '<param name="quality" value="high"></param>\n ' |
|---|
| 450 | + '<param name="bgcolor" value="#ffffff"></param>\n ' |
|---|
| 451 | + '<embed src="' + swflocEmbed + '" ' |
|---|
| 452 | + 'quality="high" ' |
|---|
| 453 | + 'bgcolor="#ffffff" ' |
|---|
| 454 | + 'width="' + this.width + '" ' |
|---|
| 455 | + 'height="' + this.height + '" ' |
|---|
| 456 | + 'id="' + this.id + 'Embed' + '" ' |
|---|
| 457 | + 'name="' + this.id + '" ' |
|---|
| 458 | + 'swLiveConnect="true" ' |
|---|
| 459 | + 'align="middle" ' |
|---|
| 460 | + 'allowScriptAccess="always" ' |
|---|
| 461 | + 'type="application/x-shockwave-flash" ' |
|---|
| 462 | + 'pluginspage="' |
|---|
| 463 | + this.protocol() |
|---|
| 464 | +'://www.macromedia.com/go/getflashplayer" ' |
|---|
| 465 | + '></embed>\n' |
|---|
| 466 | + '</object>\n'; |
|---|
| 467 | |
|---|
| 468 | // using same mechanism on all browsers now to write out |
|---|
| 469 | // Flash object into page |
|---|
| 470 | |
|---|
| 471 | // document.write no longer works correctly due to Eolas patent workaround |
|---|
| 472 | // in IE; nothing happens (i.e. object doesn't go into page if we use it) |
|---|
| 473 | dojo.connect(dojo, "loaded", dojo.hitch(this, function(){ |
|---|
| 474 | // Prevent putting duplicate SWFs onto the page |
|---|
| 475 | var containerId = this.id + "Container"; |
|---|
| 476 | if(dojo.byId(containerId)){ |
|---|
| 477 | return; |
|---|
| 478 | } |
|---|
| 479 | |
|---|
| 480 | var div = document.createElement("div"); |
|---|
| 481 | div.id = this.id + "Container"; |
|---|
| 482 | |
|---|
| 483 | div.style.width = this.width + "px"; |
|---|
| 484 | div.style.height = this.height + "px"; |
|---|
| 485 | if(!this._visible){ |
|---|
| 486 | div.style.position = "absolute"; |
|---|
| 487 | div.style.zIndex = "10000"; |
|---|
| 488 | div.style.top = "-1000px"; |
|---|
| 489 | } |
|---|
| 490 | |
|---|
| 491 | div.innerHTML = objectHTML; |
|---|
| 492 | |
|---|
| 493 | var body = document.getElementsByTagName("body"); |
|---|
| 494 | if(!body || !body.length){ |
|---|
| 495 | throw new Error("No body tag for this page"); |
|---|
| 496 | } |
|---|
| 497 | body = body[0]; |
|---|
| 498 | body.appendChild(div); |
|---|
| 499 | })); |
|---|
| 500 | }, |
|---|
| 501 | |
|---|
| 502 | get: function(){ /* Object */ |
|---|
| 503 | // summary: Gets the Flash object DOM node. |
|---|
| 504 | |
|---|
| 505 | if(dojo.isIE || dojo.isWebKit){ |
|---|
| 506 | //TODO: should this really be the else? |
|---|
| 507 | return dojo.byId(this.id); |
|---|
| 508 | }else{ |
|---|
| 509 | // different IDs on OBJECT and EMBED tags or |
|---|
| 510 | // else Firefox will return wrong one and |
|---|
| 511 | // communication won't work; |
|---|
| 512 | // also, document.getElementById() returns a |
|---|
| 513 | // plugin but ExternalInterface calls don't |
|---|
| 514 | // work on it so we have to use |
|---|
| 515 | // document[id] instead |
|---|
| 516 | return document[this.id + "Embed"]; |
|---|
| 517 | } |
|---|
| 518 | }, |
|---|
| 519 | |
|---|
| 520 | setVisible: function(/* Boolean */ visible){ |
|---|
| 521 | //console.debug("setVisible, visible="+visible); |
|---|
| 522 | |
|---|
| 523 | // summary: Sets the visibility of this Flash object. |
|---|
| 524 | var container = dojo.byId(this.id + "Container"); |
|---|
| 525 | if(visible){ |
|---|
| 526 | container.style.position = "absolute"; // IE -- Brad Neuberg |
|---|
| 527 | container.style.visibility = "visible"; |
|---|
| 528 | }else{ |
|---|
| 529 | container.style.position = "absolute"; |
|---|
| 530 | container.style.y = "-1000px"; |
|---|
| 531 | container.style.visibility = "hidden"; |
|---|
| 532 | } |
|---|
| 533 | }, |
|---|
| 534 | |
|---|
| 535 | center: function(){ |
|---|
| 536 | // summary: Centers the flash applet on the page. |
|---|
| 537 | |
|---|
| 538 | var elementWidth = this.width; |
|---|
| 539 | var elementHeight = this.height; |
|---|
| 540 | |
|---|
| 541 | var viewport = dojo.window.getBox(); |
|---|
| 542 | |
|---|
| 543 | // compute the centered position |
|---|
| 544 | var x = viewport.l + (viewport.w - elementWidth) / 2; |
|---|
| 545 | var y = viewport.t + (viewport.h - elementHeight) / 2; |
|---|
| 546 | |
|---|
| 547 | // set the centered position |
|---|
| 548 | var container = dojo.byId(this.id + "Container"); |
|---|
| 549 | container.style.top = y + "px"; |
|---|
| 550 | container.style.left = x + "px"; |
|---|
| 551 | } |
|---|
| 552 | }; |
|---|
| 553 | |
|---|
| 554 | |
|---|
| 555 | dojox.flash.Communicator = function(){ |
|---|
| 556 | // summary: |
|---|
| 557 | // A class that is used to communicate between Flash and JavaScript. |
|---|
| 558 | // description: |
|---|
| 559 | // This class helps mediate Flash and JavaScript communication. Internally |
|---|
| 560 | // it uses Flash 8's ExternalInterface API, but adds functionality to fix |
|---|
| 561 | // various encoding bugs that ExternalInterface has. |
|---|
| 562 | } |
|---|
| 563 | |
|---|
| 564 | dojox.flash.Communicator.prototype = { |
|---|
| 565 | // Registers the existence of a Flash method that we can call with |
|---|
| 566 | // JavaScript, using Flash 8's ExternalInterface. |
|---|
| 567 | _addExternalInterfaceCallback: function(methodName){ |
|---|
| 568 | //console.debug("addExternalInterfaceCallback, methodName="+methodName); |
|---|
| 569 | var wrapperCall = dojo.hitch(this, function(){ |
|---|
| 570 | // some browsers don't like us changing values in the 'arguments' array, so |
|---|
| 571 | // make a fresh copy of it |
|---|
| 572 | var methodArgs = new Array(arguments.length); |
|---|
| 573 | for(var i = 0; i < arguments.length; i++){ |
|---|
| 574 | methodArgs[i] = this._encodeData(arguments[i]); |
|---|
| 575 | } |
|---|
| 576 | |
|---|
| 577 | var results = this._execFlash(methodName, methodArgs); |
|---|
| 578 | results = this._decodeData(results); |
|---|
| 579 | |
|---|
| 580 | return results; |
|---|
| 581 | }); |
|---|
| 582 | |
|---|
| 583 | this[methodName] = wrapperCall; |
|---|
| 584 | }, |
|---|
| 585 | |
|---|
| 586 | // Encodes our data to get around ExternalInterface bugs that are still |
|---|
| 587 | // present even in Flash 9. |
|---|
| 588 | _encodeData: function(data){ |
|---|
| 589 | //console.debug("encodeData, data=", data); |
|---|
| 590 | if(!data || typeof data != "string"){ |
|---|
| 591 | return data; |
|---|
| 592 | } |
|---|
| 593 | |
|---|
| 594 | // transforming \ into \\ doesn't work; just use a custom encoding |
|---|
| 595 | data = data.replace("\\", "&custom_backslash;"); |
|---|
| 596 | |
|---|
| 597 | // also use custom encoding for the null character to avoid problems |
|---|
| 598 | data = data.replace(/\0/g, "&custom_null;"); |
|---|
| 599 | |
|---|
| 600 | return data; |
|---|
| 601 | }, |
|---|
| 602 | |
|---|
| 603 | // Decodes our data to get around ExternalInterface bugs that are still |
|---|
| 604 | // present even in Flash 9. |
|---|
| 605 | _decodeData: function(data){ |
|---|
| 606 | //console.debug("decodeData, data=", data); |
|---|
| 607 | // wierdly enough, Flash sometimes returns the result as an |
|---|
| 608 | // 'object' that is actually an array, rather than as a String; |
|---|
| 609 | // detect this by looking for a length property; for IE |
|---|
| 610 | // we also make sure that we aren't dealing with a typeof string |
|---|
| 611 | // since string objects have length property there |
|---|
| 612 | if(data && data.length && typeof data != "string"){ |
|---|
| 613 | data = data[0]; |
|---|
| 614 | } |
|---|
| 615 | |
|---|
| 616 | if(!data || typeof data != "string"){ |
|---|
| 617 | return data; |
|---|
| 618 | } |
|---|
| 619 | |
|---|
| 620 | // needed for IE; \0 is the NULL character |
|---|
| 621 | data = data.replace(/\&custom_null\;/g, "\0"); |
|---|
| 622 | |
|---|
| 623 | // certain XMLish characters break Flash's wire serialization for |
|---|
| 624 | // ExternalInterface; these are encoded on the |
|---|
| 625 | // DojoExternalInterface side into a custom encoding, rather than |
|---|
| 626 | // the standard entity encoding, because otherwise we won't be able to |
|---|
| 627 | // differentiate between our own encoding and any entity characters |
|---|
| 628 | // that are being used in the string itself |
|---|
| 629 | data = data.replace(/\&custom_lt\;/g, "<") |
|---|
| 630 | .replace(/\&custom_gt\;/g, ">") |
|---|
| 631 | .replace(/\&custom_backslash\;/g, '\\'); |
|---|
| 632 | |
|---|
| 633 | return data; |
|---|
| 634 | }, |
|---|
| 635 | |
|---|
| 636 | // Executes a Flash method; called from the JavaScript wrapper proxy we |
|---|
| 637 | // create on dojox.flash.comm. |
|---|
| 638 | _execFlash: function(methodName, methodArgs){ |
|---|
| 639 | //console.debug("execFlash, methodName="+methodName+", methodArgs=", methodArgs); |
|---|
| 640 | var plugin = dojox.flash.obj.get(); |
|---|
| 641 | methodArgs = (methodArgs) ? methodArgs : []; |
|---|
| 642 | |
|---|
| 643 | // encode arguments that are strings |
|---|
| 644 | for(var i = 0; i < methodArgs; i++){ |
|---|
| 645 | if(typeof methodArgs[i] == "string"){ |
|---|
| 646 | methodArgs[i] = this._encodeData(methodArgs[i]); |
|---|
| 647 | } |
|---|
| 648 | } |
|---|
| 649 | |
|---|
| 650 | // we use this gnarly hack below instead of |
|---|
| 651 | // plugin[methodName] for two reasons: |
|---|
| 652 | // 1) plugin[methodName] has no call() method, which |
|---|
| 653 | // means we can't pass in multiple arguments dynamically |
|---|
| 654 | // to a Flash method -- we can only have one |
|---|
| 655 | // 2) On IE plugin[methodName] returns undefined -- |
|---|
| 656 | // plugin[methodName] used to work on IE when we |
|---|
| 657 | // used document.write but doesn't now that |
|---|
| 658 | // we use dynamic DOM insertion of the Flash object |
|---|
| 659 | // -- Brad Neuberg |
|---|
| 660 | var flashExec = function(){ |
|---|
| 661 | return eval(plugin.CallFunction( |
|---|
| 662 | "<invoke name=\"" + methodName |
|---|
| 663 | + "\" returntype=\"javascript\">" |
|---|
| 664 | + __flash__argumentsToXML(methodArgs, 0) |
|---|
| 665 | + "</invoke>")); |
|---|
| 666 | }; |
|---|
| 667 | var results = flashExec.call(methodArgs); |
|---|
| 668 | |
|---|
| 669 | if(typeof results == "string"){ |
|---|
| 670 | results = this._decodeData(results); |
|---|
| 671 | } |
|---|
| 672 | |
|---|
| 673 | return results; |
|---|
| 674 | } |
|---|
| 675 | } |
|---|
| 676 | |
|---|
| 677 | // FIXME: dojo.declare()-ify this |
|---|
| 678 | |
|---|
| 679 | // TODO: I did not test the Install code when I refactored Dojo Flash from 0.4 to |
|---|
| 680 | // 1.0, so am not sure if it works. If Flash is not present I now prefer |
|---|
| 681 | // that Gears is installed instead of Flash because GearsStorageProvider is |
|---|
| 682 | // much easier to work with than Flash's hacky ExternalInteface. |
|---|
| 683 | // -- Brad Neuberg |
|---|
| 684 | dojox.flash.Install = function(){ |
|---|
| 685 | // summary: Helps install Flash plugin if needed. |
|---|
| 686 | // description: |
|---|
| 687 | // Figures out the best way to automatically install the Flash plugin |
|---|
| 688 | // for this browser and platform. Also determines if installation or |
|---|
| 689 | // revving of the current plugin is needed on this platform. |
|---|
| 690 | } |
|---|
| 691 | |
|---|
| 692 | dojox.flash.Install.prototype = { |
|---|
| 693 | needed: function(){ /* Boolean */ |
|---|
| 694 | // summary: |
|---|
| 695 | // Determines if installation or revving of the current plugin is |
|---|
| 696 | // needed. |
|---|
| 697 | |
|---|
| 698 | // do we even have flash? |
|---|
| 699 | if(!dojox.flash.info.capable){ |
|---|
| 700 | return true; |
|---|
| 701 | } |
|---|
| 702 | |
|---|
| 703 | // Must have ExternalInterface which came in Flash 8 |
|---|
| 704 | if(!dojox.flash.info.isVersionOrAbove(8, 0, 0)){ |
|---|
| 705 | return true; |
|---|
| 706 | } |
|---|
| 707 | |
|---|
| 708 | // otherwise we don't need installation |
|---|
| 709 | return false; |
|---|
| 710 | }, |
|---|
| 711 | |
|---|
| 712 | install: function(){ |
|---|
| 713 | // summary: Performs installation or revving of the Flash plugin. |
|---|
| 714 | var installObj; |
|---|
| 715 | |
|---|
| 716 | // indicate that we are installing |
|---|
| 717 | dojox.flash.info.installing = true; |
|---|
| 718 | dojox.flash.installing(); |
|---|
| 719 | |
|---|
| 720 | if(dojox.flash.info.capable == false){ // we have no Flash at all |
|---|
| 721 | // write out a simple Flash object to force the browser to prompt |
|---|
| 722 | // the user to install things |
|---|
| 723 | installObj = new dojox.flash.Embed(false); |
|---|
| 724 | installObj.write(); // write out HTML for Flash |
|---|
| 725 | }else if(dojox.flash.info.isVersionOrAbove(6, 0, 65)){ // Express Install |
|---|
| 726 | installObj = new dojox.flash.Embed(false); |
|---|
| 727 | installObj.write(true); // write out HTML for Flash 8 version+ |
|---|
| 728 | installObj.setVisible(true); |
|---|
| 729 | installObj.center(); |
|---|
| 730 | }else{ // older Flash install than version 6r65 |
|---|
| 731 | alert("This content requires a more recent version of the Macromedia " |
|---|
| 732 | +" Flash Player."); |
|---|
| 733 | window.location.href = + dojox.flash.Embed.protocol() + |
|---|
| 734 | "://www.macromedia.com/go/getflashplayer"; |
|---|
| 735 | } |
|---|
| 736 | }, |
|---|
| 737 | |
|---|
| 738 | // Called when the Express Install is either finished, failed, or was |
|---|
| 739 | // rejected by the user. |
|---|
| 740 | _onInstallStatus: function(msg){ |
|---|
| 741 | if (msg == "Download.Complete"){ |
|---|
| 742 | // Installation is complete. |
|---|
| 743 | dojox.flash._initialize(); |
|---|
| 744 | }else if(msg == "Download.Cancelled"){ |
|---|
| 745 | alert("This content requires a more recent version of the Macromedia " |
|---|
| 746 | +" Flash Player."); |
|---|
| 747 | window.location.href = dojox.flash.Embed.protocol() + |
|---|
| 748 | "://www.macromedia.com/go/getflashplayer"; |
|---|
| 749 | }else if (msg == "Download.Failed"){ |
|---|
| 750 | // The end user failed to download the installer due to a network failure |
|---|
| 751 | alert("There was an error downloading the Flash Player update. " |
|---|
| 752 | + "Please try again later, or visit macromedia.com to download " |
|---|
| 753 | + "the latest version of the Flash plugin."); |
|---|
| 754 | } |
|---|
| 755 | } |
|---|
| 756 | } |
|---|
| 757 | |
|---|
| 758 | // find out if Flash is installed |
|---|
| 759 | dojox.flash.info = new dojox.flash.Info(); |
|---|
| 760 | |
|---|
| 761 | // vim:ts=4:noet:tw=0: |
|---|
