158 CHAPTER 6 DECOUPLED NAVIGATION PATTERN E (Graphic web design)
158 CHAPTER 6 DECOUPLED NAVIGATION PATTERN E B V N Figure 6-5. Applicable and not applicable scenarios of the Decoupled Navigation pattern The individual scenarios are explained as follows: 1. Inapplicable: The link is inapplicable because it references another link that wishes to start a new context unrelated to the current content. This scenario is comparable to when a user runs one application and then starts another application. 2. Inapplicable: The pop-up dialog box has a title bar that in some cases allows the pop-up to be dragged by using a mouse. The act of dragging is purely a user interface action that at the technical level uses HTML events and navigation techniques. 3. Applicable: The link referenced in the pop-up dialog box is visually identical to scenario 1, but when clicked the actions are not. This link-click is caught as an event and processed by using a JavaScript function. The JavaScript function processes the link context and loads content that relates to the context. In a sense, this scenario and the first scenario are related because under normal circumstances the referenced content is unrelated to the current content. The difference is that the JavaScript function intelligently decides what should be loaded, thus relating the current context to the new context. 4. Inapplicable: The link referenced by this scenario is an HTML form. By its nature an HTML form is designed to change contexts and replace the old context with a new context. However, HTML forms can function like the link in scenario 3. To make this scenario applicable, the form event onsubmit would need to be processed.
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