Method and device for implementing undo and/or redo
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An implementation method and redo technology, applied in the field of undo and/or redo implementation methods and devices, can solve problems such as increased development cost, large design time, occupation, etc., and achieve the effect of saving design time and improving development efficiency
Active Publication Date: 2015-04-29
BEIJING SIEMENS CERBERUS ELECTRONICS
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[0005] However, in the prior art, it is necessary to design the undo / redo function for each module, each step, and each function separately during the software development stage, which takes a lot of design time and significantly increases the development cost
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[0041] In order to make the technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to illustrate the present invention, and are not used to limit the protection scope of the present invention.
[0042] figure 1 It is a flowchart of a method for implementing undo and / or redo according to the embodiment of the present invention.
[0043] Such as figure 1 As shown, the method includes:
[0044] Step 101: Establish a container that contains an undo queue and / or redo queue, the undo queue and / or redo queue is used to hold one or more template class objects, the template class contains and / or to be undone and / or to be redo Operation related function pointer union (UNION) and related function call information.
[0045] In the embodiment of the present invention, a template...
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Abstract
The embodiment of the invention discloses a method and device for implementing undo and/or redo. The method comprises the following steps: establishing a container containing an undo queue and/or a redo queue, wherein the undo queue and/or the redo queue are/is used for accommodating one or more objects of a template class, and the template class contains the UNION of functional pointers related to operation to be undone and/or to be redid and related function call information; establishing the corresponding object of the template class based on the operation executed by a user, and putting the established object of the template class in the corresponding undo queue and/or redo queue in the container; when the user triggers an undo action and/or an redo action, popping the corresponding object of the template class from the undo queue and/or the redo queue, and utilizing the call information in the object of the template class to execute functions of the functional pointers in the object of the template class. By adoption of the template class as an operator of undo and/or redo, various types of classes can be accommodated, and data operation is not involved, so that the method is suitable for various application environments.
Description
Technical field [0001] The present invention relates to the field of computer technology, in particular to a method and device for implementing undo and / or redo. Background technique [0002] Software engineering is a discipline that studies the construction and maintenance of effective, practical and high-quality software using engineering methods. It involves programming languages, databases, software development tools, system platforms, standards, design patterns, etc. In modern society, software is used in many ways. Typical software includes e-mail, embedded system, man-machine interface, office suite, operating system, compiler, database, game, etc. At the same time, almost all industries have computer software applications, such as industry, agriculture, banking, aviation, and government departments. These applications promote economic and social development, and also improve work and life efficiency [0003] Software framework usually refers to a software component spec...
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