Widgets

Herschel has worked 40% of his 8-hour shift at the widget factory. How many hours has he worked ... 

On a small scale, pluggable user-interface widgets form components. Several such kits come with visual builders, such as Visual Basic, which help you plug the components together. Kits also may extend to small parts outside the user interface domain (for example, VisualAge and JavaBeans). These components all work within one executable program. 

Dropping a user-interface widget, such as a master-slave pair of list boxes, onto a canvas and connecting the lists to the appropriate data sources from the problem domain. 

Any model railroad enthusiast will recognize this as a neat kit of parts with which you could build a lot of different projects—many more potential products than the number of components in the box. Note the ease of modifying the first version to realize the second. It s not difficult to imagine such a kit in hardware nor to visualize it in software. The Motor could be a software component controlling a hardware motor the Buttons, Meter, and Selector could be user-interface widgets and the other components could be objects not directly visible to the user. 

There are various ways to build and connect user interfaces to business objects. The scheme you use depends largely on your user-interface frameworks. Following is a simple scheme broken into two main phases configuration (creates and connects the appropriate objects) and run (user interacts with the widgets). 

Create one application object. This object coordinates and mediates among the UI widgets and between the widgets and the business objects. The application object is created at the appropriate point in the dialog flow in contrast, the business objects are created from persistent storage. 

The application object creates its corresponding UI panel and populates it with its widgets. 

The application object registers the widgets as its observer later, a single changed method will inform all these widgets to update themselves. 

The application object registers itself as the listener for events from each relevant widget if necessary, it creates intermediate adapter objects to listen directly for these... 

The application object registers itself as an observer for the relevant business objects. When they change they update the application object, which updates the widgets if necessary (see Figure 12.6). 

The widget generates the appropriate event to the application object (possibly through an intermediate adapter object). 

The application object makes necessary changes to its state to reflect the progress of the interaction dialog then it generates a command to the business object then it propagates updates to the widgets. 

The widgets update themselves by calling back to the application object for the state information they need (again, possibly translated by the intermediate adapter). 

This is something of a puzzle tliat grows worse as we continue to ponder the two structures. There just don t appear to be many significant differences between them at first. Both structures make the same widgets both structures have the same number of people in the same roles. The only difference between them is that the organization chooses not to turn to the free market as frequently as does the confederation to hire its help (nor does the employee choose to turn to the free market to look for work as often as does the temp). In odier words, employers... 

Imagine that every time the widget entreprenem hires a new employee, a transaction cost C is incurred. The hiring of a successful employee results in the employer realizing a marginal value V per time unit, but the probability of success in hiring is assumed to be probability p on each hire. Thus the expected profit P per time period to the employer may be written as follows ... 

Widget SPC generally provides a direct measure of the manufactured piece. Color SPC generally requires further sample preparation prior to measurement.The AIAG s translation of gage R R falls short of addressing the full scope of color measurement R R because of the multiplicity in the shear number of steps required to produce color readings. 

But the pharmaceutical industry isn t like any other industry. By virtue of what it produces—and the respect it demands for what it produces—it does carry some social service obligations. The public expects drug makers to be more ethical than the proverbial widget makers prescription drug commercials prompt public outrage in a way that McDonald s ads do not. If the industry is ever to gain the public s trust, more companies will have to behave like the old Merck. In fact, Merck will have to behave like the old Merck. 

A NASA engineer throws ordinary gadgets and widgets onto a conference table around which his NASA colleagues stand. The engineer announces that the pile of what looks like random pieces of junk represents aU that the Apollo 13 astronauts have at their disposal on their spacecraft. 

Okay, people, listen up. The people upstairs handed us this one and we gotta come through. We gotta find a way to make this [a box] fit into the hole for this a cylinder) using nothing but that, [the gadgets and widgets he s thrown onto the table.]... 

You gotta find a way to make your essay s introduction fit into the hole for your essay s conclusion, using nothing but the details you compile by graphically organizing your word gadgets and widgets, which you will learn how to do in Chapter Two. 

A hierarchical map starts with a shape— for example, a rectangle—in which a main concept or category is written. Analysis of the concepts produces subconcepts, subcategories, sublevels, etc. The word widgets for these subconcepts are written within shapes comparable to and beneath the main concept, establishing the hierarchy or pecking order. 

The first and last shapes of your 1-2-3 map compare to the Apollo 13 box and cylinder, and the middle part, your graphic organizer, is word widgets and gadgets that connect those parts ... 

Numerous toolkits SMILES, Depict, SMARTS, Fingerprint, Monomer, Thor, Merlin, X-Widgets, Program objects. Remote Access, and Reaction Toolkits (see Glossary)... 

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