Texas Instruments matrix-gui-2.0 hacking -- app_description.php

<?php

/*
 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ 
 * 
 * 
 *  Redistribution and use in source and binary forms, with or without 
 *  modification, are permitted provided that the following conditions 
 *  are met:
 *
 *    Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer.
 *
 *    Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the   
 *    distribution.
 *
 *    Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
*/

# 加载通用函数
require("helper_functions.php");


$var = read_desktop_file();

if($var==null)
{
    echo "Json.txt file is empty or doesn't exist.";
    return;
}

//Some parts of the code doesn't set the submenu variable when the user is at the Main Menu which is relected in the "top" variable
$submenu = isset($_GET["submenu"]) == true ? $_GET["submenu"] : "main_menu" ;

$found_app =  get_application($var,$submenu,$_GET["app"]);

$menu_title = $found_app["Name"];
$enable_main_menu_link = true;
?>
    <?php include "menubar.php"; ?>

<?php
    

    $title = $found_app["Name"];                # 获取app名字
    
    $description = "No Description";            # 描述
    $program_type = $found_app["ProgramType"];  # 获取程序类型

    if($found_app["Description_Link"]!=-1)      # 获取描述链接
    {
        # 读取描述链接文件
        $handle = fopen($found_app["Description_Link"], "rb");     
        $description = fread($handle,filesize($found_app["Description_Link"]));
        fclose($handle);

        if(strlen($description)==0)             # 没有获取到文件描述数据
            $description = "Invalid link for description page";
    }

    $app_title = $found_app["Name"];            # app的标题是app的名字

    # 合成超级链接
    $link =  "run_script.php?&submenu=".urlencode($submenu)."&app=".urlencode($app_title);
?>
    <div id = "descrip_text">
        <div id ="no_display" style = "display:none;">          <!-- 没有显示出来 -->
            <h1 style = "color:red;">Sorry</h1>
            You can't run the GUI application <?php echo $title; ?>. The system has detected that your embedded system is not connected to a display device.
        </div>
        <div id = "running_remotely"  style = "display:none;">  <!-- 没有显示出来 -->
            <h1 style = "color:yellow;">Warning</h1>
                You are currently running Matrix remotely and <?php echo $title; ?> is a GUI based application. <br>
                After clicking run, look at the display device connected to the embedded system to see and/or interact with the application
        </div>
        <div id = "run_application" style= "text-align:center;">
            <a href = "<?php echo $link;?>"><img id = "run_img" src= "images/run-icon.png"></a>
        </div>
        <div>
            <!-- 显示描述文件内容 -->
            <?php echo $description; ?>
        </div>
    </div>

<script>
    // 自动生成js变量
    <?php 
        if($program_type=="gui")
            echo "var isgraphicalApp = true;";
        else
            echo "var isgraphicalApp = false;";
    ?>
    
    // 这里主要是让对应的内容显示出来
    if(isgraphicalApp == true)
    {
        if(has_graphics == false)
        {
        
            $("#no_display").show();
            $("#run_application").hide();
        }
        else if(client_is_host == false)
        {
            $("#running_remotely").show();
        }
    }
</script>