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authoradhitya2016-04-12 07:02:39 +0000
committeradhitya2016-04-12 07:02:39 +0000
commitdd83478e3fcaac98de690aa59e6288ad41a1c351 (patch)
tree38653bdf0ae95053f66777c4ac3fe5be5d8fbd33 /src/js/handler/mxCellMarker.js
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Keyboard shortcuts work properly
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-/**
- * $Id: mxCellMarker.js,v 1.30 2011-07-15 12:57:50 gaudenz Exp $
- * Copyright (c) 2006-2010, JGraph Ltd
- */
-/**
- * Class: mxCellMarker
- *
- * A helper class to process mouse locations and highlight cells.
- *
- * Helper class to highlight cells. To add a cell marker to an existing graph
- * for highlighting all cells, the following code is used:
- *
- * (code)
- * var marker = new mxCellMarker(graph);
- * graph.addMouseListener({
- * mouseDown: function() {},
- * mouseMove: function(sender, me)
- * {
- * marker.process(me);
- * },
- * mouseUp: function() {}
- * });
- * (end)
- *
- * Event: mxEvent.MARK
- *
- * Fires after a cell has been marked or unmarked. The <code>state</code>
- * property contains the marked <mxCellState> or null if no state is marked.
- *
- * Constructor: mxCellMarker
- *
- * Constructs a new cell marker.
- *
- * Parameters:
- *
- * graph - Reference to the enclosing <mxGraph>.
- * validColor - Optional marker color for valid states. Default is
- * <mxConstants.DEFAULT_VALID_COLOR>.
- * invalidColor - Optional marker color for invalid states. Default is
- * <mxConstants.DEFAULT_INVALID_COLOR>.
- * hotspot - Portion of the width and hight where a state intersects a
- * given coordinate pair. A value of 0 means always highlight. Default is
- * <mxConstants.DEFAULT_HOTSPOT>.
- */
-function mxCellMarker(graph, validColor, invalidColor, hotspot)
-{
- if (graph != null)
- {
- this.graph = graph;
- this.validColor = (validColor != null) ? validColor : mxConstants.DEFAULT_VALID_COLOR;
- this.invalidColor = (validColor != null) ? invalidColor : mxConstants.DEFAULT_INVALID_COLOR;
- this.hotspot = (hotspot != null) ? hotspot : mxConstants.DEFAULT_HOTSPOT;
-
- this.highlight = new mxCellHighlight(graph);
- }
-};
-
-/**
- * Extends mxEventSource.
- */
-mxCellMarker.prototype = new mxEventSource();
-mxCellMarker.prototype.constructor = mxCellMarker;
-
-/**
- * Variable: graph
- *
- * Reference to the enclosing <mxGraph>.
- */
-mxCellMarker.prototype.graph = null;
-
-/**
- * Variable: enabled
- *
- * Specifies if the marker is enabled. Default is true.
- */
-mxCellMarker.prototype.enabled = true;
-
-/**
- * Variable: hotspot
- *
- * Specifies the portion of the width and height that should trigger
- * a highlight. The area around the center of the cell to be marked is used
- * as the hotspot. Possible values are between 0 and 1. Default is
- * mxConstants.DEFAULT_HOTSPOT.
- */
-mxCellMarker.prototype.hotspot = mxConstants.DEFAULT_HOTSPOT;
-
-/**
- * Variable: hotspotEnabled
- *
- * Specifies if the hotspot is enabled. Default is false.
- */
-mxCellMarker.prototype.hotspotEnabled = false;
-
-/**
- * Variable: validColor
- *
- * Holds the valid marker color.
- */
-mxCellMarker.prototype.validColor = null;
-
-/**
- * Variable: invalidColor
- *
- * Holds the invalid marker color.
- */
-mxCellMarker.prototype.invalidColor = null;
-
-/**
- * Variable: currentColor
- *
- * Holds the current marker color.
- */
-mxCellMarker.prototype.currentColor = null;
-
-/**
- * Variable: validState
- *
- * Holds the marked <mxCellState> if it is valid.
- */
-mxCellMarker.prototype.validState = null;
-
-/**
- * Variable: markedState
- *
- * Holds the marked <mxCellState>.
- */
-mxCellMarker.prototype.markedState = null;
-
-/**
- * Function: setEnabled
- *
- * Enables or disables event handling. This implementation
- * updates <enabled>.
- *
- * Parameters:
- *
- * enabled - Boolean that specifies the new enabled state.
- */
-mxCellMarker.prototype.setEnabled = function(enabled)
-{
- this.enabled = enabled;
-};
-
-/**
- * Function: isEnabled
- *
- * Returns true if events are handled. This implementation
- * returns <enabled>.
- */
-mxCellMarker.prototype.isEnabled = function()
-{
- return this.enabled;
-};
-
-/**
- * Function: setHotspot
- *
- * Sets the <hotspot>.
- */
-mxCellMarker.prototype.setHotspot = function(hotspot)
-{
- this.hotspot = hotspot;
-};
-
-/**
- * Function: getHotspot
- *
- * Returns the <hotspot>.
- */
-mxCellMarker.prototype.getHotspot = function()
-{
- return this.hotspot;
-};
-
-/**
- * Function: setHotspotEnabled
- *
- * Specifies whether the hotspot should be used in <intersects>.
- */
-mxCellMarker.prototype.setHotspotEnabled = function(enabled)
-{
- this.hotspotEnabled = enabled;
-};
-
-/**
- * Function: isHotspotEnabled
- *
- * Returns true if hotspot is used in <intersects>.
- */
-mxCellMarker.prototype.isHotspotEnabled = function()
-{
- return this.hotspotEnabled;
-};
-
-/**
- * Function: hasValidState
- *
- * Returns true if <validState> is not null.
- */
-mxCellMarker.prototype.hasValidState = function()
-{
- return this.validState != null;
-};
-
-/**
- * Function: getValidState
- *
- * Returns the <validState>.
- */
-mxCellMarker.prototype.getValidState = function()
-{
- return this.validState;
-};
-
-/**
- * Function: getMarkedState
- *
- * Returns the <markedState>.
- */
-mxCellMarker.prototype.getMarkedState = function()
-{
- return this.markedState;
-};
-
-/**
- * Function: reset
- *
- * Resets the state of the cell marker.
- */
-mxCellMarker.prototype.reset = function()
-{
- this.validState = null;
-
- if (this.markedState != null)
- {
- this.markedState = null;
- this.unmark();
- }
-};
-
-/**
- * Function: process
- *
- * Processes the given event and cell and marks the state returned by
- * <getState> with the color returned by <getMarkerColor>. If the
- * markerColor is not null, then the state is stored in <markedState>. If
- * <isValidState> returns true, then the state is stored in <validState>
- * regardless of the marker color. The state is returned regardless of the
- * marker color and valid state.
- */
-mxCellMarker.prototype.process = function(me)
-{
- var state = null;
-
- if (this.isEnabled())
- {
- state = this.getState(me);
- var isValid = (state != null) ? this.isValidState(state) : false;
- var color = this.getMarkerColor(me.getEvent(), state, isValid);
-
- if (isValid)
- {
- this.validState = state;
- }
- else
- {
- this.validState = null;
- }
-
- if (state != this.markedState || color != this.currentColor)
- {
- this.currentColor = color;
-
- if (state != null && this.currentColor != null)
- {
- this.markedState = state;
- this.mark();
- }
- else if (this.markedState != null)
- {
- this.markedState = null;
- this.unmark();
- }
- }
- }
-
- return state;
-};
-
-/**
- * Function: markCell
- *
- * Marks the given cell using the given color, or <validColor> if no color is specified.
- */
-mxCellMarker.prototype.markCell = function(cell, color)
-{
- var state = this.graph.getView().getState(cell);
-
- if (state != null)
- {
- this.currentColor = (color != null) ? color : this.validColor;
- this.markedState = state;
- this.mark();
- }
-};
-
-/**
- * Function: mark
- *
- * Marks the <markedState> and fires a <mark> event.
- */
-mxCellMarker.prototype.mark = function()
-{
- this.highlight.setHighlightColor(this.currentColor);
- this.highlight.highlight(this.markedState);
- this.fireEvent(new mxEventObject(mxEvent.MARK, 'state', this.markedState));
-};
-
-/**
- * Function: unmark
- *
- * Hides the marker and fires a <mark> event.
- */
-mxCellMarker.prototype.unmark = function()
-{
- this.mark();
-};
-
-/**
- * Function: isValidState
- *
- * Returns true if the given <mxCellState> is a valid state. If this
- * returns true, then the state is stored in <validState>. The return value
- * of this method is used as the argument for <getMarkerColor>.
- */
-mxCellMarker.prototype.isValidState = function(state)
-{
- return true;
-};
-
-/**
- * Function: getMarkerColor
- *
- * Returns the valid- or invalidColor depending on the value of isValid.
- * The given <mxCellState> is ignored by this implementation.
- */
-mxCellMarker.prototype.getMarkerColor = function(evt, state, isValid)
-{
- return (isValid) ? this.validColor : this.invalidColor;
-};
-
-/**
- * Function: getState
- *
- * Uses <getCell>, <getStateToMark> and <intersects> to return the
- * <mxCellState> for the given <mxMouseEvent>.
- */
-mxCellMarker.prototype.getState = function(me)
-{
- var view = this.graph.getView();
- cell = this.getCell(me);
- var state = this.getStateToMark(view.getState(cell));
-
- return (state != null && this.intersects(state, me)) ? state : null;
-};
-
-/**
- * Function: getCell
- *
- * Returns the <mxCell> for the given event and cell. This returns the
- * given cell.
- */
-mxCellMarker.prototype.getCell = function(me)
-{
- return me.getCell();
-};
-
-/**
- * Function: getStateToMark
- *
- * Returns the <mxCellState> to be marked for the given <mxCellState> under
- * the mouse. This returns the given state.
- */
-mxCellMarker.prototype.getStateToMark = function(state)
-{
- return state;
-};
-
-/**
- * Function: intersects
- *
- * Returns true if the given coordinate pair intersects the given state.
- * This returns true if the <hotspot> is 0 or the coordinates are inside
- * the hotspot for the given cell state.
- */
-mxCellMarker.prototype.intersects = function(state, me)
-{
- if (this.hotspotEnabled)
- {
- return mxUtils.intersectsHotspot(state, me.getGraphX(), me.getGraphY(),
- this.hotspot, mxConstants.MIN_HOTSPOT_SIZE,
- mxConstants.MAX_HOTSPOT_SIZE);
- }
-
- return true;
-};
-
-/**
- * Function: destroy
- *
- * Destroys the handler and all its resources and DOM nodes.
- */
-mxCellMarker.prototype.destroy = function()
-{
- this.graph.getView().removeListener(this.resetHandler);
- this.graph.getModel().removeListener(this.resetHandler);
- this.highlight.destroy();
-};