1 /*

     2  * AboutOss is an utility library to retrieve and display

     3  * opensource licenses in Android applications.

     4  *

     5  * Copyright (C) 2023-2025 by Frederic-Charles Barthelery.

     6  *

     7  * This file is part of AboutOss.

     8  *

     9  * AboutOss is free software: you can redistribute it and/or modify

    10  * it under the terms of the GNU General Public License as published by

    11  * the Free Software Foundation, either version 3 of the License, or

    12  * (at your option) any later version.

    13  *

    14  * AboutOss is distributed in the hope that it will be useful,

    15  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    17  * GNU General Public License for more details.

    18  *

    19  * You should have received a copy of the GNU General Public License

    20  * along with AboutOss.  If not, see <http://www.gnu.org/licenses/>.

    21  */

    22 package com.geekorum.aboutoss.ui.common

    23 

    24 import java.awt.Desktop

    25 import java.net.URI

    26 import java.util.Locale

    27 

    28 class DesktopBrowserLauncher : BrowserLauncher {

    29 

    30     private val desktopLauncher = run {

    31         if (Desktop.isDesktopSupported()) {

    32             val desktop = Desktop.getDesktop()

    33             if (desktop.isSupported(Desktop.Action.BROWSE)) {

    34                 return@run DesktopLauncher(desktop)

    35             }

    36         }

    37         null

    38     }

    39 

    40     private val openCommandLauncher = OpenCommandLauncher()

    41 

    42     override fun warmUp() {

    43     }

    44 

    45     override fun launchUrl(link: String) {

    46         try {

    47             desktopLauncher?.launchUrl(link)

    48             return

    49         } catch (e: Exception) {

    50             e.printStackTrace()

    51             System.err.println("Unable to launch url $link. Use fallback")

    52         }

    53 

    54         try {

    55             openCommandLauncher.launchUrl(link)

    56             return

    57         } catch (e: Exception) {

    58             e.printStackTrace()

    59             System.err.println("Unable to launch url $link")

    60         }

    61     }

    62 

    63     override fun mayLaunchUrl(vararg uris: String) {

    64     }

    65 

    66     override fun shutdown() {

    67     }

    68 }

    69 

    70 private interface Launcher {

    71     fun launchUrl(link: String)

    72 }

    73 

    74 private class DesktopLauncher(

    75     private val desktop: Desktop

    76 ) : Launcher {

    77     override fun launchUrl(link: String) {

    78         desktop.browse(URI(link))

    79     }

    80 }

    81 

    82 private class OpenCommandLauncher: Launcher {

    83     override fun launchUrl(link: String) {

    84         val osName = System.getProperty("os.name").lowercase(Locale.getDefault())

    85         val command = when {

    86             "mac" in osName -> "open"

    87             "nix" in osName || "nux" in osName -> "xdg-open"

    88             else -> error("cannot open $link")

    89         }

    90 

    91         ProcessBuilder(command, link)

    92             .start()

    93     }

    94 }