nsprogressdialog.js

从国外的站点上淘的个人财务管理系统．开源．

    // Update the dialog to indicate specified percent complete.
    setPercent: function( percent ) {
        // Maximum percentage is 100.
        if ( percent > 100 ) {
            percent = 100;
        }
        // Test if percentage is changing.
        if ( this.percent != percent ) {
            this.mPercent = percent;

            // If dialog not opened yet, bail early.
            if ( !this.loaded ) {
                return this.mPercent;
            }

            if ( percent == -1 ) {
                // Progress meter needs to be in "undetermined" mode.
                this.mode = "undetermined";

                // Update progress meter percentage text.
                this.setValue( "progressText", "" );
            } else {
                // Progress meter needs to be in normal mode.
                this.mode = "normal";

                // Set progress meter thermometer.
                this.setValue( "progress", percent );

                // Update progress meter percentage text.
                this.setValue( "progressText", this.replaceInsert( this.getString( "percentMsg" ), 1, percent ) );
            }

            // Update title.
            this.setTitle();
        }
        return this.mPercent;
    },

    // Update download rate and dialog display.
    // Note that we don't want the displayed value to quiver
    // between essentially identical values (e.g., 99.9Kb and
    // 100.0Kb) so we only update if we see a big change.
    setRate: function( rate ) {
        if ( rate ) {
            // rate is bytes/sec
            var change = Math.abs( this.rate - rate );
            // Don't update too often!
            if ( change > this.rate / 10 ) {
                // Displayed rate changes.
                this.mRate = rate;
            }
        }
        return this.mRate;
    },

    // Handle download completion.
    setCompleted: function() {
        // If dialog hasn't loaded yet, defer this.
        if ( !this.loaded ) {
            this.dialog.setTimeout( function(obj){obj.setCompleted()}, 100, this );
            return false;
        }
        if ( !this.mCompleted ) {
            this.mCompleted = true;

            // If the "keep dialog open" box is checked, then update dialog.
            if ( this.dialog && this.dialogElement( "keep" ).checked ) {
                // Indicate completion in status area.
                var string = this.getString( "completeMsg" );
                string = this.replaceInsert( string,
                                             1,
                                             this.formatSeconds( this.elapsed/1000 ) );
                string = this.replaceInsert( string,
                                             2,
                                             this.targetFile.fileSize >> 10 );

                this.setValue( "status", string);
                // Put progress meter at 100%.
                this.percent = 100;

                // Set time remaining to 00:00.
                this.setValue( "timeLeft", this.formatSeconds( 0 ) );

                // Change Cancel button to Close, and give it focus.
                var cancelButton = this.dialogElement( "cancel" );
                cancelButton.label = this.getString( "close" );
                cancelButton.focus();

                // Activate reveal/launch buttons if we enable them.
                var enableButtons = true;
                try {
                  var prefs = Components.classes[ "@mozilla.org/preferences-service;1" ]
                                  .getService( Components.interfaces.nsIPrefBranch );
                  enableButtons = prefs.getBoolPref( "browser.download.progressDnldDialog.enable_launch_reveal_buttons" );
                } catch ( e ) {
                }

                if ( enableButtons ) {
                    this.enable( "reveal" );
                    try {
                        if ( this.targetFile != null ) {
                            this.enable( "launch" );
                        }
                    } catch(e) {
                    }
                }

                // Disable the Pause/Resume buttons.
                this.dialogElement( "pauseResume" ).disabled = true;

                // Fix up dialog layout (which gets messed up sometimes).
                this.dialog.sizeToContent();

                // GetAttention to show the user that we're done
               this.dialog.getAttention();
            } else if ( this.dialog ) {
                this.dialog.close();
            }
        }
        return this.mCompleted;
    },

    // Set progress meter to given mode ("normal" or "undetermined").
    setMode: function( newMode ) {
        if ( this.mode != newMode ) {
            // Need to update progress meter.
            this.dialogElement( "progress" ).setAttribute( "mode", newMode );
        }
        return this.mMode = newMode;
    },

    // Set pause/resume state.
    setPaused: function( pausing ) {
        // If state changing, then update stuff.
        if ( this.paused != pausing ) {
            var string = pausing ? "resume" : "pause";
            this.dialogElement( "pauseResume" ).label = this.getString(string);

            // If we have an observer, tell it to suspend/resume
            if ( this.observer ) {
                this.observer.observe( this, pausing ? "onpause" : "onresume" , "" );
            }
        }
        return this.mPaused = pausing;
    },

    // Convert raw rate (bytes/sec) to Kbytes/sec (to nearest tenth).
    rateToKRate: function( rate ) {
        return ( rate / 1024 ).toFixed(1);
    },

    // Format number of seconds in hh:mm:ss form.
    formatSeconds: function( secs ) {
        // Round the number of seconds to remove fractions.
        secs = parseInt( secs + .5 );
        var hours = parseInt( secs/3600 );
        secs -= hours*3600;
        var mins = parseInt( secs/60 );
        secs -= mins*60;
        var result;
        if ( hours )
            result = this.getString( "longTimeFormat" );
        else
            result = this.getString( "shortTimeFormat" );

        if ( hours < 10 )
            hours = "0" + hours;
        if ( mins < 10 )
            mins = "0" + mins;
        if ( secs < 10 )
            secs = "0" + secs;

        // Insert hours, minutes, and seconds into result string.
        result = this.replaceInsert( result, 1, hours );
        result = this.replaceInsert( result, 2, mins );
        result = this.replaceInsert( result, 3, secs );

        return result;
    },

    // Get dialog element using argument as id.
    dialogElement: function( id ) {
        // Check if we've already fetched it.
        if ( !( id in this.fields ) ) {
            // No, then get it from dialog.
            try {
                this.fields[ id ] = this.dialog.document.getElementById( id );
            } catch(e) {
                this.fields[ id ] = {
                    value: "",
                    setAttribute: function(id,val) {},
                    removeAttribute: function(id) {}
                    }
            }
        }
        return this.fields[ id ];
    },

    // Set dialog element value for given dialog element.
    setValue: function( id, val ) {
        this.dialogElement( id ).value = val;
    },

    // Enable dialgo element.
    enable: function( field ) {
        this.dialogElement( field ).removeAttribute( "disabled" );
    },

    // Get localizable string from properties file.
    getProperty: function( propertyId, strings, len ) {
        if ( !this.mBundle ) {
            this.mBundle = Components.classes[ "@mozilla.org/intl/stringbundle;1" ]
                             .getService( Components.interfaces.nsIStringBundleService )
                               .createBundle( "chrome://global/locale/nsProgressDialog.properties");
        }
        return this.mBundle.formatStringFromName( propertyId, strings, len );
    },

    // Get localizable string (from dialog <data> elements).
    getString: function ( stringId ) {
        // Check if we've fetched this string already.
        if ( !( this.strings && stringId in this.strings ) ) {
            // Presume the string is empty if we can't get it.
            this.strings[ stringId ] = "";
            // Try to get it.
            try {
                this.strings[ stringId ] = this.dialog.document.getElementById( "string."+stringId ).childNodes[0].nodeValue;
            } catch (e) {}
       }
       return this.strings[ stringId ];
    },

    // Replaces insert ("#n") with input text.
    replaceInsert: function( text, index, value ) {
        var result = text;
        var regExp = new RegExp( "#"+index );
        result = result.replace( regExp, value );
        return result;
    },

    // Hide a given dialog field.
    hide: function( field ) {
        this.dialogElement( field ).hidden = true;

        // Also hide any related separator element...
        var sep = this.dialogElement( field+"Separator" );
        if (sep)
            sep.hidden = true;
    },

    // Return input in hex, prepended with "0x" and leading zeros (to 8 digits).
    hex: function( x ) {
        return "0x" + ("0000000" + Number(x).toString(16)).slice(-8);
    },

    // Dump text (if debug is on).
    dump: function( text ) {
        if ( this.debug ) {
            dump( text );
        }
    }
}

// This Component's module implementation.  All the code below is used to get this
// component registered and accessible via XPCOM.
var module = {
    // registerSelf: Register this component.
    registerSelf: function (compMgr, fileSpec, location, type) {
        var compReg = compMgr.QueryInterface( Components.interfaces.nsIComponentRegistrar );
        compReg.registerFactoryLocation( this.cid,
                                         "Mozilla Download Progress Dialog",
                                         this.contractId,
                                         fileSpec,
                                         location,
                                         type );
    },

    // getClassObject: Return this component's factory object.
    getClassObject: function (compMgr, cid, iid) {
        if (!cid.equals(this.cid))
            throw Components.results.NS_ERROR_NO_INTERFACE;

        if (!iid.equals(Components.interfaces.nsIFactory))
            throw Components.results.NS_ERROR_NOT_IMPLEMENTED;

        return this.factory;
    },

    /* CID for this class */
    cid: Components.ID("{F5D248FD-024C-4f30-B208-F3003B85BC92}"),

    /* Contract ID for this class */
    contractId: "@mozilla.org/progressdialog;1",

    /* factory object */
    factory: {
        // createInstance: Return a new nsProgressDialog object.
        createInstance: function (outer, iid) {
            if (outer != null)
                throw Components.results.NS_ERROR_NO_AGGREGATION;

            return (new nsProgressDialog()).QueryInterface(iid);
        }
    },

    // canUnload: n/a (returns true)
    canUnload: function(compMgr) {
        return true;
    }
};

// NSGetModule: Return the nsIModule object.
function NSGetModule(compMgr, fileSpec) {
    return module;
}