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| 1 | +/** |
| 2 | + * Responsive Login Page - Vanilla JavaScript |
| 3 | + * Handles login form functionality without framework dependencies |
| 4 | + * |
| 5 | + * Copyright 2026 Horde LLC (http://www.horde.org/) |
| 6 | + * |
| 7 | + * See the enclosed file LICENSE for license information (LGPL-2). If you |
| 8 | + * did not receive this file, see https://www.horde.org/licenses/lgpl. |
| 9 | + */ |
| 10 | + |
| 11 | +document.addEventListener('DOMContentLoaded', function() { |
| 12 | + // Get translated strings from global scope (set by login.php) |
| 13 | + var strings = window.HordeLoginStrings || { |
| 14 | + username: "Please enter a username.", |
| 15 | + password: "Please enter a password.", |
| 16 | + capsLock: "Caps Lock is on" |
| 17 | + }; |
| 18 | + |
| 19 | + // Show mode selector if it exists |
| 20 | + var modeDiv = document.getElementById('horde_select_view_div'); |
| 21 | + var modeSelect = document.getElementById('horde_select_view'); |
| 22 | + if (modeDiv && modeSelect) { |
| 23 | + // Remove mobile_nojs option (requires JavaScript) |
| 24 | + var noJsOption = modeSelect.querySelector('option[value="mobile_nojs"]'); |
| 25 | + if (noJsOption) { |
| 26 | + noJsOption.remove(); |
| 27 | + } |
| 28 | + |
| 29 | + // Set selected value from cookie or default |
| 30 | + var preSelected = window.HordeLoginPreSelected || "auto"; |
| 31 | + if (preSelected) { |
| 32 | + var option = modeSelect.querySelector('option[value="' + preSelected + '"]'); |
| 33 | + if (option) { |
| 34 | + modeSelect.selectedIndex = option.index; |
| 35 | + } |
| 36 | + } |
| 37 | + |
| 38 | + // Show the mode selector |
| 39 | + modeDiv.style.display = ''; |
| 40 | + } |
| 41 | + |
| 42 | + // Capture hash for anchor navigation |
| 43 | + if (location.hash) { |
| 44 | + var anchorInput = document.getElementById('anchor_string'); |
| 45 | + if (anchorInput) { |
| 46 | + anchorInput.value = location.hash.substring(1); |
| 47 | + } |
| 48 | + } |
| 49 | + |
| 50 | + // Focus appropriate field |
| 51 | + var userField = document.getElementById('horde_user'); |
| 52 | + var passField = document.getElementById('horde_pass'); |
| 53 | + var loginButton = document.getElementById('login-button'); |
| 54 | + |
| 55 | + if (userField && !userField.value) { |
| 56 | + userField.focus(); |
| 57 | + } else if (passField && !passField.value) { |
| 58 | + passField.focus(); |
| 59 | + } else if (loginButton) { |
| 60 | + loginButton.focus(); |
| 61 | + } |
| 62 | + |
| 63 | + // Handle form submission |
| 64 | + var form = document.getElementById('horde_login'); |
| 65 | + if (form) { |
| 66 | + form.addEventListener('submit', function(e) { |
| 67 | + var loginPost = document.getElementById('login_post'); |
| 68 | + if (loginPost) { |
| 69 | + loginPost.value = '1'; |
| 70 | + } |
| 71 | + |
| 72 | + // Validate fields |
| 73 | + if (userField && !userField.value) { |
| 74 | + e.preventDefault(); |
| 75 | + alert(strings.username); |
| 76 | + userField.focus(); |
| 77 | + return false; |
| 78 | + } |
| 79 | + if (passField && !passField.value) { |
| 80 | + e.preventDefault(); |
| 81 | + alert(strings.password); |
| 82 | + passField.focus(); |
| 83 | + return false; |
| 84 | + } |
| 85 | + |
| 86 | + // Disable button to prevent double-submit |
| 87 | + if (loginButton) { |
| 88 | + loginButton.disabled = true; |
| 89 | + } |
| 90 | + }); |
| 91 | + } |
| 92 | + |
| 93 | + // Handle language change |
| 94 | + var langSelect = document.getElementById('new_lang'); |
| 95 | + if (langSelect) { |
| 96 | + langSelect.addEventListener('change', function() { |
| 97 | + // Only reload if user hasn't entered credentials yet |
| 98 | + if ((!userField || !userField.value) && (!passField || !passField.value)) { |
| 99 | + window.location = 'login.php?new_lang=' + encodeURIComponent(this.value); |
| 100 | + } |
| 101 | + }); |
| 102 | + } |
| 103 | + |
| 104 | + // Caps lock detection for password field |
| 105 | + if (passField) { |
| 106 | + passField.addEventListener('keypress', function(e) { |
| 107 | + var capsWarning = document.getElementById('horde-login-pass-capslock'); |
| 108 | + if (!capsWarning) { |
| 109 | + capsWarning = document.createElement('div'); |
| 110 | + capsWarning.id = 'horde-login-pass-capslock'; |
| 111 | + capsWarning.className = 'alert alert-warning'; |
| 112 | + capsWarning.style.display = 'none'; |
| 113 | + capsWarning.style.marginTop = '0.5rem'; |
| 114 | + capsWarning.textContent = strings.capsLock; |
| 115 | + passField.parentNode.appendChild(capsWarning); |
| 116 | + } |
| 117 | + |
| 118 | + var charCode = e.keyCode || e.which; |
| 119 | + var shiftKey = e.shiftKey; |
| 120 | + |
| 121 | + // Check if caps lock is on |
| 122 | + if ((charCode >= 65 && charCode <= 90 && !shiftKey) || |
| 123 | + (charCode >= 97 && charCode <= 122 && shiftKey)) { |
| 124 | + capsWarning.style.display = 'block'; |
| 125 | + } else { |
| 126 | + capsWarning.style.display = 'none'; |
| 127 | + } |
| 128 | + }); |
| 129 | + } |
| 130 | +}); |
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