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1 /* |
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2 � Copyright 2008 Nokia Corporation. All rights reserved. |
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3 |
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4 IMPORTANT: The Nokia software ("WRTKit and Example Widget files") is supplied to you by Nokia |
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5 Corporation (�Nokia�) in consideration of your agreement to the following terms. Your use, installation |
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6 and/or redistribution of the WRTKit and Example Widget files constitutes acceptance of these terms. If |
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7 you do not agree with these terms, please do not use, install, or redistribute the WRTKit and Example |
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8 Widget files. |
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9 |
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10 In consideration of your agreement to abide by the following terms, and subject to these terms, Nokia |
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11 grants you a personal, non-exclusive license, under Nokia�s copyrights in the WRTKit and Example |
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12 Widget files, to use, reproduce, and redistribute the WRTKit and Example files, in text form (for HTML, |
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13 CSS, or JavaScript files) or binary form (for associated images), for the sole purpose of creating S60 |
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14 Widgets. |
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15 |
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16 If you redistribute the WRTKit and Example files, you must retain this entire notice in all such |
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17 redistributions of the WRTKit and Example files. |
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18 |
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19 You may not use the name, trademarks, service marks or logos of Nokia to endorse or promote products |
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20 that include the WRTKit and Example files without the prior written explicit agreement with Nokia. |
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21 Except as expressly stated in this notice, no other rights or licenses, express or implied, are granted by |
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22 Nokia herein, including but not limited to any patent rights that may be infringed by your products that |
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23 incorporate the WRTKit and Example files or by other works in which the WRTKit and Example files |
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24 may be incorporated. |
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25 |
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26 The WRTKit and Example files are provided on an "AS IS" basis. NOKIA MAKES NO |
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27 WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED |
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28 WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A |
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29 PARTICULAR PURPOSE, REGARDING THE EXAMPLES OR ITS USE AND OPERATION |
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30 ALONE OR IN COMBINATION WITH YOUR PRODUCTS. |
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31 |
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32 IN NO EVENT SHALL NOKIA BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR |
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33 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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34 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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35 INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, AND/OR |
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36 DISTRIBUTION OF THE EXAMPLES, HOWEVER CAUSED AND WHETHER UNDER THEORY |
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37 OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, |
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38 EVEN IF NOKIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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39 |
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40 */ |
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41 |
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42 /////////////////////////////////////////////////////////////////////////////// |
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43 // The View class is an abstract base class for views in the UI toolkit. |
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44 // Don't use the View directly - instead use a concrete subclass like ListView. |
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45 |
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46 // Constructor. |
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47 function View(id) { |
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48 if (id != UI_NO_INIT_ID) { |
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49 this.init(id); |
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50 } |
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51 } |
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52 |
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53 // View inherits from UIElement. |
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54 View.prototype = new UIElement(UI_NO_INIT_ID); |
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55 |
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56 // Currently focused control. |
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57 View.prototype.focusedControl = null; |
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58 |
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59 // Allows going back from every view |
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60 View.prototype.previousView = null; |
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61 |
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62 // Allows going back to the same scroll position |
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63 View.prototype.scrollTop = 0; |
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64 |
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65 // Initializer - called from constructor. |
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66 View.prototype.init = function(id) { |
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67 uiLogger.debug("View.init(" + id + ")"); |
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68 |
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69 // call superclass initializer |
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70 UIElement.prototype.init.call(this, id); |
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71 } |
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72 |
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73 // Returns the currently focused control; null if none. |
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74 View.prototype.getFocusedControl = function() { |
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75 return this.focusedControl; |
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76 } |
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77 |
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78 // Used to notify the view that the focused control has changed. |
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79 View.prototype.focusedControlChanged = function(control) { |
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80 uiLogger.debug("View.focusedControlChanged(" + control + ")"); |
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81 this.focusedControl = control; |
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82 // notify event listeners |
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83 this.fireEvent(this.createEvent("FocusedControlChanged", this.focusedControl)); |
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84 } |
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85 |
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86 // Attempts to focus the first focusable control. |
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87 // Override in subclasses as required. |
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88 View.prototype.focusFirstControl = function() { |
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89 uiLogger.debug("View.focusFirstControl()"); |
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90 } |
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91 |
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92 // Attempts to reset all control focus states. |
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93 // Override in subclasses as required. |
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94 View.prototype.resetControlFocusStates = function() { |
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95 uiLogger.debug("View.resetControlFocusStates()"); |
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96 } |
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97 |
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98 |
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99 // //////////////////////////////////////////////////////////////////// |
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100 // Added functions |
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101 |
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102 // set up soft keys. Default implementation sets right soft |
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103 // key to Back if the previous view is set |
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104 View.prototype.setupSoftKeys = function() { |
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105 if (window.widget) { |
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106 if (this.previousView != null) { |
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107 var self = this; |
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108 menu.setRightSoftkeyLabel("Back", function(){self.goBack();}); |
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109 } else { |
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110 menu.setRightSoftkeyLabel("Exit", function(){window.close();}); |
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111 } |
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112 } |
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113 } |
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114 |
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115 // show the view - sets up soft keys |
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116 View.prototype.show = function () { |
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117 this.setupSoftKeys(); |
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118 if (window.widget) { |
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119 widget.setNavigationEnabled(false); |
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120 } |
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121 this.update(false); |
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122 uiManager.setView(this); |
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123 //this.restoreScrollPos(); |
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124 } |
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125 |
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126 // abstract function for updating page content |
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127 View.prototype.update = function(forceUpdate){ |
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128 } |
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129 |
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130 View.prototype.saveScrollPos = function() { |
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131 this.scrollTop = window.pageYOffset; |
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132 // alert("Saving scroll pos: " + this.scrollTop); |
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133 } |
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134 |
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135 View.prototype.restoreScrollPos = function() { |
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136 // alert("Restoring scroll pos: " + this.scrollTop); |
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137 window.scrollTo(0, this.scrollTop); |
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138 } |
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139 |
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140 // Default back button handler takes us to previous view |
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141 // if one is set |
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142 View.prototype.goBack = function() { |
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143 if ( this.previousView != null ) { |
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144 // transition looks funky |
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145 if (window.widget) { |
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146 widget.prepareForTransition("fade"); |
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147 } |
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148 this.previousView.show(); |
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149 if (window.widget) { |
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150 widget.performTransition(); |
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151 } |
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152 } |
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153 } |
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154 |